Home / 9,288.47-12,818.30-5,309.95

Finding the Fourth Proportional to 9,288.47, 12,818.30 and 5,309.95

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Solution

The fourth proportional to 9,288.47, 12,818.30 and 5,309.95 is: 7,327.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,288.47 : 12,818.30 = 5,309.95 : x
  2. Step 2: Convert to fraction form
    9,288.47/12,818.30 = 5,309.95/x
  3. Step 3: Cross multiply
    9,288.47x = 12,818.30 × 5,309.95
  4. Step 4: Simplify right side
    9,288.47x = 68,064,473.49
  5. Step 5: Solve for x
    x = 68,064,473.49/9,288.47
  6. Step 6: Final answer
    x = 7,327.85

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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.