Home / 2,872.25-4,307.45-1,117.13

Finding the Fourth Proportional to 2,872.25, 4,307.45 and 1,117.13

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Solution

The fourth proportional to 2,872.25, 4,307.45 and 1,117.13 is: 1,675.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.25 : 4,307.45 = 1,117.13 : x
  2. Step 2: Convert to fraction form
    2,872.25/4,307.45 = 1,117.13/x
  3. Step 3: Cross multiply
    2,872.25x = 4,307.45 × 1,117.13
  4. Step 4: Simplify right side
    2,872.25x = 4,811,981.62
  5. Step 5: Solve for x
    x = 4,811,981.62/2,872.25
  6. Step 6: Final answer
    x = 1,675.34

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Half scale
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Double scale
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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.