Home / 2,225.38-3,070.98-1,385.66

Finding the Fourth Proportional to 2,225.38, 3,070.98 and 1,385.66

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Solution

The fourth proportional to 2,225.38, 3,070.98 and 1,385.66 is: 1,912.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.38 : 3,070.98 = 1,385.66 : x
  2. Step 2: Convert to fraction form
    2,225.38/3,070.98 = 1,385.66/x
  3. Step 3: Cross multiply
    2,225.38x = 3,070.98 × 1,385.66
  4. Step 4: Simplify right side
    2,225.38x = 4,255,311.86
  5. Step 5: Solve for x
    x = 4,255,311.86/2,225.38
  6. Step 6: Final answer
    x = 1,912.18

Related Problems

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.