Home / 8,955.32-12,357.40-5,177.90

Finding the Fourth Proportional to 8,955.32, 12,357.40 and 5,177.90

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Solution

The fourth proportional to 8,955.32, 12,357.40 and 5,177.90 is: 7,144.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.32 : 12,357.40 = 5,177.90 : x
  2. Step 2: Convert to fraction form
    8,955.32/12,357.40 = 5,177.90/x
  3. Step 3: Cross multiply
    8,955.32x = 12,357.40 × 5,177.90
  4. Step 4: Simplify right side
    8,955.32x = 63,985,381.46
  5. Step 5: Solve for x
    x = 63,985,381.46/8,955.32
  6. Step 6: Final answer
    x = 7,144.96

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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.