Home / 9,170.68-12,655.56-4,978.93

Finding the Fourth Proportional to 9,170.68, 12,655.56 and 4,978.93

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Solution

The fourth proportional to 9,170.68, 12,655.56 and 4,978.93 is: 6,870.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.68 : 12,655.56 = 4,978.93 : x
  2. Step 2: Convert to fraction form
    9,170.68/12,655.56 = 4,978.93/x
  3. Step 3: Cross multiply
    9,170.68x = 12,655.56 × 4,978.93
  4. Step 4: Simplify right side
    9,170.68x = 63,011,147.35
  5. Step 5: Solve for x
    x = 63,011,147.35/9,170.68
  6. Step 6: Final answer
    x = 6,870.94

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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.