Home / 2,538.11-3,501.47-1,489.70

Finding the Fourth Proportional to 2,538.11, 3,501.47 and 1,489.70

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Solution

The fourth proportional to 2,538.11, 3,501.47 and 1,489.70 is: 2,055.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,538.11 : 3,501.47 = 1,489.70 : x
  2. Step 2: Convert to fraction form
    2,538.11/3,501.47 = 1,489.70/x
  3. Step 3: Cross multiply
    2,538.11x = 3,501.47 × 1,489.70
  4. Step 4: Simplify right side
    2,538.11x = 5,216,114.90
  5. Step 5: Solve for x
    x = 5,216,114.90/2,538.11
  6. Step 6: Final answer
    x = 2,055.12

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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.