Home / 7,400.28-10,210.68-6,279.48

Finding the Fourth Proportional to 7,400.28, 10,210.68 and 6,279.48

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Solution

The fourth proportional to 7,400.28, 10,210.68 and 6,279.48 is: 8,664.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,400.28 : 10,210.68 = 6,279.48 : x
  2. Step 2: Convert to fraction form
    7,400.28/10,210.68 = 6,279.48/x
  3. Step 3: Cross multiply
    7,400.28x = 10,210.68 × 6,279.48
  4. Step 4: Simplify right side
    7,400.28x = 64,117,760.85
  5. Step 5: Solve for x
    x = 64,117,760.85/7,400.28
  6. Step 6: Final answer
    x = 8,664.23

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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.