Home / 7,881.17-10,876.28-4,894.70

Finding the Fourth Proportional to 7,881.17, 10,876.28 and 4,894.70

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Solution

The fourth proportional to 7,881.17, 10,876.28 and 4,894.70 is: 6,754.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.17 : 10,876.28 = 4,894.70 : x
  2. Step 2: Convert to fraction form
    7,881.17/10,876.28 = 4,894.70/x
  3. Step 3: Cross multiply
    7,881.17x = 10,876.28 × 4,894.70
  4. Step 4: Simplify right side
    7,881.17x = 53,236,048.86
  5. Step 5: Solve for x
    x = 53,236,048.86/7,881.17
  6. Step 6: Final answer
    x = 6,754.85

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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.