Home / 1,543.77-2,130.45-845.14

Finding the Fourth Proportional to 1,543.77, 2,130.45 and 845.14

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Solution

The fourth proportional to 1,543.77, 2,130.45 and 845.14 is: 1,166.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,543.77 : 2,130.45 = 845.14 : x
  2. Step 2: Convert to fraction form
    1,543.77/2,130.45 = 845.14/x
  3. Step 3: Cross multiply
    1,543.77x = 2,130.45 × 845.14
  4. Step 4: Simplify right side
    1,543.77x = 1,800,528.51
  5. Step 5: Solve for x
    x = 1,800,528.51/1,543.77
  6. Step 6: Final answer
    x = 1,166.32

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Double scale
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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.