Home / 3,620.18-5,430.17-1,155.15

Finding the Fourth Proportional to 3,620.18, 5,430.17 and 1,155.15

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Solution

The fourth proportional to 3,620.18, 5,430.17 and 1,155.15 is: 1,732.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.18 : 5,430.17 = 1,155.15 : x
  2. Step 2: Convert to fraction form
    3,620.18/5,430.17 = 1,155.15/x
  3. Step 3: Cross multiply
    3,620.18x = 5,430.17 × 1,155.15
  4. Step 4: Simplify right side
    3,620.18x = 6,272,663.76
  5. Step 5: Solve for x
    x = 6,272,663.76/3,620.18
  6. Step 6: Final answer
    x = 1,732.69

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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.