Home / 2,207.61-3,047.19-1,421.66

Finding the Fourth Proportional to 2,207.61, 3,047.19 and 1,421.66

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Solution

The fourth proportional to 2,207.61, 3,047.19 and 1,421.66 is: 1,962.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.61 : 3,047.19 = 1,421.66 : x
  2. Step 2: Convert to fraction form
    2,207.61/3,047.19 = 1,421.66/x
  3. Step 3: Cross multiply
    2,207.61x = 3,047.19 × 1,421.66
  4. Step 4: Simplify right side
    2,207.61x = 4,332,068.14
  5. Step 5: Solve for x
    x = 4,332,068.14/2,207.61
  6. Step 6: Final answer
    x = 1,962.33

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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.