Home / 7,342.10-10,132.14-4,155.40

Finding the Fourth Proportional to 7,342.10, 10,132.14 and 4,155.40

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Solution

The fourth proportional to 7,342.10, 10,132.14 and 4,155.40 is: 5,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,342.10 : 10,132.14 = 4,155.40 : x
  2. Step 2: Convert to fraction form
    7,342.10/10,132.14 = 4,155.40/x
  3. Step 3: Cross multiply
    7,342.10x = 10,132.14 × 4,155.40
  4. Step 4: Simplify right side
    7,342.10x = 42,103,122.80
  5. Step 5: Solve for x
    x = 42,103,122.80/7,342.10
  6. Step 6: Final answer
    x = 5,734.48

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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.