Home / 7,890.91-10,890.12-4,534.88

Finding the Fourth Proportional to 7,890.91, 10,890.12 and 4,534.88

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Solution

The fourth proportional to 7,890.91, 10,890.12 and 4,534.88 is: 6,258.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.91 : 10,890.12 = 4,534.88 : x
  2. Step 2: Convert to fraction form
    7,890.91/10,890.12 = 4,534.88/x
  3. Step 3: Cross multiply
    7,890.91x = 10,890.12 × 4,534.88
  4. Step 4: Simplify right side
    7,890.91x = 49,385,337.19
  5. Step 5: Solve for x
    x = 49,385,337.19/7,890.91
  6. Step 6: Final answer
    x = 6,258.51

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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.