Home / 2,210.38-3,050.12-1,215.70

Finding the Fourth Proportional to 2,210.38, 3,050.12 and 1,215.70

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Solution

The fourth proportional to 2,210.38, 3,050.12 and 1,215.70 is: 1,677.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,210.38 : 3,050.12 = 1,215.70 : x
  2. Step 2: Convert to fraction form
    2,210.38/3,050.12 = 1,215.70/x
  3. Step 3: Cross multiply
    2,210.38x = 3,050.12 × 1,215.70
  4. Step 4: Simplify right side
    2,210.38x = 3,708,026.30
  5. Step 5: Solve for x
    x = 3,708,026.30/2,210.38
  6. Step 6: Final answer
    x = 1,677.55

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Half 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.