Home / 9,170.51-12,655.31-4,978.76

Finding the Fourth Proportional to 9,170.51, 12,655.31 and 4,978.76

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Solution

The fourth proportional to 9,170.51, 12,655.31 and 4,978.76 is: 6,870.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.51 : 12,655.31 = 4,978.76 : x
  2. Step 2: Convert to fraction form
    9,170.51/12,655.31 = 4,978.76/x
  3. Step 3: Cross multiply
    9,170.51x = 12,655.31 × 4,978.76
  4. Step 4: Simplify right side
    9,170.51x = 63,007,663.05
  5. Step 5: Solve for x
    x = 63,007,663.05/9,170.51
  6. Step 6: Final answer
    x = 6,870.69

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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.