Home / 1,543.59-2,129.40-1,012.23

Finding the Fourth Proportional to 1,543.59, 2,129.40 and 1,012.23

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Solution

The fourth proportional to 1,543.59, 2,129.40 and 1,012.23 is: 1,396.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.59 : 2,129.40 = 1,012.23 : x
  2. Step 2: Convert to fraction form
    1,543.59/2,129.40 = 1,012.23/x
  3. Step 3: Cross multiply
    1,543.59x = 2,129.40 × 1,012.23
  4. Step 4: Simplify right side
    1,543.59x = 2,155,442.56
  5. Step 5: Solve for x
    x = 2,155,442.56/1,543.59
  6. Step 6: Final answer
    x = 1,396.38

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Half scale
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Double scale
Find fourth proportional to 1,544.59, 2,130.78 and 1,013.23
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.