Home / 5,275.16-7,279.62-2,885.07

Finding the Fourth Proportional to 5,275.16, 7,279.62 and 2,885.07

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Solution

The fourth proportional to 5,275.16, 7,279.62 and 2,885.07 is: 3,981.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.16 : 7,279.62 = 2,885.07 : x
  2. Step 2: Convert to fraction form
    5,275.16/7,279.62 = 2,885.07/x
  3. Step 3: Cross multiply
    5,275.16x = 7,279.62 × 2,885.07
  4. Step 4: Simplify right side
    5,275.16x = 21,002,175.16
  5. Step 5: Solve for x
    x = 21,002,175.16/5,275.16
  6. Step 6: Final answer
    x = 3,981.34

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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.