Home / 9,155.90-12,635.93-5,177.72

Finding the Fourth Proportional to 9,155.90, 12,635.93 and 5,177.72

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Solution

The fourth proportional to 9,155.90, 12,635.93 and 5,177.72 is: 7,145.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,155.90 : 12,635.93 = 5,177.72 : x
  2. Step 2: Convert to fraction form
    9,155.90/12,635.93 = 5,177.72/x
  3. Step 3: Cross multiply
    9,155.90x = 12,635.93 × 5,177.72
  4. Step 4: Simplify right side
    9,155.90x = 65,425,307.48
  5. Step 5: Solve for x
    x = 65,425,307.48/9,155.90
  6. Step 6: Final answer
    x = 7,145.70

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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.