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Finding the Fourth Proportional to 3,132.10, 4,698.87 and 940.87

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Solution

The fourth proportional to 3,132.10, 4,698.87 and 940.87 is: 1,411.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,132.10 : 4,698.87 = 940.87 : x
  2. Step 2: Convert to fraction form
    3,132.10/4,698.87 = 940.87/x
  3. Step 3: Cross multiply
    3,132.10x = 4,698.87 × 940.87
  4. Step 4: Simplify right side
    3,132.10x = 4,421,010.54
  5. Step 5: Solve for x
    x = 4,421,010.54/3,132.10
  6. Step 6: Final answer
    x = 1,411.52

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1.5x scale

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.