Home / 10,278.77-15,418.16-2,487.59

Finding the Fourth Proportional to 10,278.77, 15,418.16 and 2,487.59

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Solution

The fourth proportional to 10,278.77, 15,418.16 and 2,487.59 is: 3,731.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.77 : 15,418.16 = 2,487.59 : x
  2. Step 2: Convert to fraction form
    10,278.77/15,418.16 = 2,487.59/x
  3. Step 3: Cross multiply
    10,278.77x = 15,418.16 × 2,487.59
  4. Step 4: Simplify right side
    10,278.77x = 38,353,971.11
  5. Step 5: Solve for x
    x = 38,353,971.11/10,278.77
  6. Step 6: Final answer
    x = 3,731.38

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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.