Home / 2,931.45-4,397.20-1,200.08

Finding the Fourth Proportional to 2,931.45, 4,397.20 and 1,200.08

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Solution

The fourth proportional to 2,931.45, 4,397.20 and 1,200.08 is: 1,800.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,931.45 : 4,397.20 = 1,200.08 : x
  2. Step 2: Convert to fraction form
    2,931.45/4,397.20 = 1,200.08/x
  3. Step 3: Cross multiply
    2,931.45x = 4,397.20 × 1,200.08
  4. Step 4: Simplify right side
    2,931.45x = 5,276,991.78
  5. Step 5: Solve for x
    x = 5,276,991.78/2,931.45
  6. Step 6: Final answer
    x = 1,800.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.