Home / 9,111.85-12,575.28-5,577.40

Finding the Fourth Proportional to 9,111.85, 12,575.28 and 5,577.40

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Solution

The fourth proportional to 9,111.85, 12,575.28 and 5,577.40 is: 7,697.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,111.85 : 12,575.28 = 5,577.40 : x
  2. Step 2: Convert to fraction form
    9,111.85/12,575.28 = 5,577.40/x
  3. Step 3: Cross multiply
    9,111.85x = 12,575.28 × 5,577.40
  4. Step 4: Simplify right side
    9,111.85x = 70,137,366.67
  5. Step 5: Solve for x
    x = 70,137,366.67/9,111.85
  6. Step 6: Final answer
    x = 7,697.38

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Half scale
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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.