Home / 3,139.04-4,331.89-1,812.74

Finding the Fourth Proportional to 3,139.04, 4,331.89 and 1,812.74

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Solution

The fourth proportional to 3,139.04, 4,331.89 and 1,812.74 is: 2,501.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.04 : 4,331.89 = 1,812.74 : x
  2. Step 2: Convert to fraction form
    3,139.04/4,331.89 = 1,812.74/x
  3. Step 3: Cross multiply
    3,139.04x = 4,331.89 × 1,812.74
  4. Step 4: Simplify right side
    3,139.04x = 7,852,568.62
  5. Step 5: Solve for x
    x = 7,852,568.62/3,139.04
  6. Step 6: Final answer
    x = 2,501.59

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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.