Home / 8,964.76-12,371.20-4,985.79

Finding the Fourth Proportional to 8,964.76, 12,371.20 and 4,985.79

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Solution

The fourth proportional to 8,964.76, 12,371.20 and 4,985.79 is: 6,880.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,964.76 : 12,371.20 = 4,985.79 : x
  2. Step 2: Convert to fraction form
    8,964.76/12,371.20 = 4,985.79/x
  3. Step 3: Cross multiply
    8,964.76x = 12,371.20 × 4,985.79
  4. Step 4: Simplify right side
    8,964.76x = 61,680,205.25
  5. Step 5: Solve for x
    x = 61,680,205.25/8,964.76
  6. Step 6: Final answer
    x = 6,880.30

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Double scale
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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.