Home / 7,690.16-10,612.68-4,503.78

Finding the Fourth Proportional to 7,690.16, 10,612.68 and 4,503.78

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Solution

The fourth proportional to 7,690.16, 10,612.68 and 4,503.78 is: 6,215.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,690.16 : 10,612.68 = 4,503.78 : x
  2. Step 2: Convert to fraction form
    7,690.16/10,612.68 = 4,503.78/x
  3. Step 3: Cross multiply
    7,690.16x = 10,612.68 × 4,503.78
  4. Step 4: Simplify right side
    7,690.16x = 47,797,175.93
  5. Step 5: Solve for x
    x = 47,797,175.93/7,690.16
  6. Step 6: Final answer
    x = 6,215.37

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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.