Home / 9,278.88-12,805.05-5,087.13

Finding the Fourth Proportional to 9,278.88, 12,805.05 and 5,087.13

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Solution

The fourth proportional to 9,278.88, 12,805.05 and 5,087.13 is: 7,020.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,278.88 : 12,805.05 = 5,087.13 : x
  2. Step 2: Convert to fraction form
    9,278.88/12,805.05 = 5,087.13/x
  3. Step 3: Cross multiply
    9,278.88x = 12,805.05 × 5,087.13
  4. Step 4: Simplify right side
    9,278.88x = 65,140,954.01
  5. Step 5: Solve for x
    x = 65,140,954.01/9,278.88
  6. Step 6: Final answer
    x = 7,020.35

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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.