Home / 10,385.19-15,580.38-2,989.48

Finding the Fourth Proportional to 10,385.19, 15,580.38 and 2,989.48

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Solution

The fourth proportional to 10,385.19, 15,580.38 and 2,989.48 is: 4,484.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.19 : 15,580.38 = 2,989.48 : x
  2. Step 2: Convert to fraction form
    10,385.19/15,580.38 = 2,989.48/x
  3. Step 3: Cross multiply
    10,385.19x = 15,580.38 × 2,989.48
  4. Step 4: Simplify right side
    10,385.19x = 46,577,234.40
  5. Step 5: Solve for x
    x = 46,577,234.40/10,385.19
  6. Step 6: Final answer
    x = 4,484.97

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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.