Home / 7,690.16-10,612.62-4,332.78

Finding the Fourth Proportional to 7,690.16, 10,612.62 and 4,332.78

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Solution

The fourth proportional to 7,690.16, 10,612.62 and 4,332.78 is: 5,979.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.16 : 10,612.62 = 4,332.78 : x
  2. Step 2: Convert to fraction form
    7,690.16/10,612.62 = 4,332.78/x
  3. Step 3: Cross multiply
    7,690.16x = 10,612.62 × 4,332.78
  4. Step 4: Simplify right side
    7,690.16x = 45,982,147.68
  5. Step 5: Solve for x
    x = 45,982,147.68/7,690.16
  6. Step 6: Final answer
    x = 5,979.35

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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.