Home / 10,385.89-15,581.57-2,990.18

Finding the Fourth Proportional to 10,385.89, 15,581.57 and 2,990.18

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Solution

The fourth proportional to 10,385.89, 15,581.57 and 2,990.18 is: 4,486.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,385.89 : 15,581.57 = 2,990.18 : x
  2. Step 2: Convert to fraction form
    10,385.89/15,581.57 = 2,990.18/x
  3. Step 3: Cross multiply
    10,385.89x = 15,581.57 × 2,990.18
  4. Step 4: Simplify right side
    10,385.89x = 46,591,722.99
  5. Step 5: Solve for x
    x = 46,591,722.99/10,385.89
  6. Step 6: Final answer
    x = 4,486.06

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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.