Home / 9,156.45-12,635.40-5,177.34

Finding the Fourth Proportional to 9,156.45, 12,635.40 and 5,177.34

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Solution

The fourth proportional to 9,156.45, 12,635.40 and 5,177.34 is: 7,144.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,156.45 : 12,635.40 = 5,177.34 : x
  2. Step 2: Convert to fraction form
    9,156.45/12,635.40 = 5,177.34/x
  3. Step 3: Cross multiply
    9,156.45x = 12,635.40 × 5,177.34
  4. Step 4: Simplify right side
    9,156.45x = 65,417,761.84
  5. Step 5: Solve for x
    x = 65,417,761.84/9,156.45
  6. Step 6: Final answer
    x = 7,144.45

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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.