Home / 9,177.72-12,665.28-4,985.96

Finding the Fourth Proportional to 9,177.72, 12,665.28 and 4,985.96

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Solution

The fourth proportional to 9,177.72, 12,665.28 and 4,985.96 is: 6,880.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,177.72 : 12,665.28 = 4,985.96 : x
  2. Step 2: Convert to fraction form
    9,177.72/12,665.28 = 4,985.96/x
  3. Step 3: Cross multiply
    9,177.72x = 12,665.28 × 4,985.96
  4. Step 4: Simplify right side
    9,177.72x = 63,148,579.47
  5. Step 5: Solve for x
    x = 63,148,579.47/9,177.72
  6. Step 6: Final answer
    x = 6,880.64

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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.