Home / 8,328.17-11,479.51-5,638.53

Finding the Fourth Proportional to 8,328.17, 11,479.51 and 5,638.53

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Solution

The fourth proportional to 8,328.17, 11,479.51 and 5,638.53 is: 7,772.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,328.17 : 11,479.51 = 5,638.53 : x
  2. Step 2: Convert to fraction form
    8,328.17/11,479.51 = 5,638.53/x
  3. Step 3: Cross multiply
    8,328.17x = 11,479.51 × 5,638.53
  4. Step 4: Simplify right side
    8,328.17x = 64,727,475.93
  5. Step 5: Solve for x
    x = 64,727,475.93/8,328.17
  6. Step 6: Final answer
    x = 7,772.12

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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.