Home / 1,810.40-2,497.42-1,146.12

Finding the Fourth Proportional to 1,810.40, 2,497.42 and 1,146.12

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Solution

The fourth proportional to 1,810.40, 2,497.42 and 1,146.12 is: 1,581.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,810.40 : 2,497.42 = 1,146.12 : x
  2. Step 2: Convert to fraction form
    1,810.40/2,497.42 = 1,146.12/x
  3. Step 3: Cross multiply
    1,810.40x = 2,497.42 × 1,146.12
  4. Step 4: Simplify right side
    1,810.40x = 2,862,343.01
  5. Step 5: Solve for x
    x = 2,862,343.01/1,810.40
  6. Step 6: Final answer
    x = 1,581.06

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Half scale
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Double scale
Find fourth proportional to 1,811.40, 2,498.80 and 1,147.12
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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.