Home / 9,315.12-12,857.40-6,008.88

Finding the Fourth Proportional to 9,315.12, 12,857.40 and 6,008.88

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Solution

The fourth proportional to 9,315.12, 12,857.40 and 6,008.88 is: 8,293.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,315.12 : 12,857.40 = 6,008.88 : x
  2. Step 2: Convert to fraction form
    9,315.12/12,857.40 = 6,008.88/x
  3. Step 3: Cross multiply
    9,315.12x = 12,857.40 × 6,008.88
  4. Step 4: Simplify right side
    9,315.12x = 77,258,573.71
  5. Step 5: Solve for x
    x = 77,258,573.71/9,315.12
  6. Step 6: Final answer
    x = 8,293.89

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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.