Home / 7,718.12-10,640.08-5,479.18

Finding the Fourth Proportional to 7,718.12, 10,640.08 and 5,479.18

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Solution

The fourth proportional to 7,718.12, 10,640.08 and 5,479.18 is: 7,553.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.12 : 10,640.08 = 5,479.18 : x
  2. Step 2: Convert to fraction form
    7,718.12/10,640.08 = 5,479.18/x
  3. Step 3: Cross multiply
    7,718.12x = 10,640.08 × 5,479.18
  4. Step 4: Simplify right side
    7,718.12x = 58,298,893.78
  5. Step 5: Solve for x
    x = 58,298,893.78/7,718.12
  6. Step 6: Final answer
    x = 7,553.51

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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.