Home / 9,170.42-12,655.16-4,978.66

Finding the Fourth Proportional to 9,170.42, 12,655.16 and 4,978.66

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Solution

The fourth proportional to 9,170.42, 12,655.16 and 4,978.66 is: 6,870.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.42 : 12,655.16 = 4,978.66 : x
  2. Step 2: Convert to fraction form
    9,170.42/12,655.16 = 4,978.66/x
  3. Step 3: Cross multiply
    9,170.42x = 12,655.16 × 4,978.66
  4. Step 4: Simplify right side
    9,170.42x = 63,005,738.89
  5. Step 5: Solve for x
    x = 63,005,738.89/9,170.42
  6. Step 6: Final answer
    x = 6,870.54

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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.