Home / 6,456.80-9,685.20-2,074.34

Finding the Fourth Proportional to 6,456.80, 9,685.20 and 2,074.34

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Solution

The fourth proportional to 6,456.80, 9,685.20 and 2,074.34 is: 3,111.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,456.80 : 9,685.20 = 2,074.34 : x
  2. Step 2: Convert to fraction form
    6,456.80/9,685.20 = 2,074.34/x
  3. Step 3: Cross multiply
    6,456.80x = 9,685.20 × 2,074.34
  4. Step 4: Simplify right side
    6,456.80x = 20,090,397.77
  5. Step 5: Solve for x
    x = 20,090,397.77/6,456.80
  6. Step 6: Final answer
    x = 3,111.51

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.