Home / 1,561.39-2,154.86-1,167.73

Finding the Fourth Proportional to 1,561.39, 2,154.86 and 1,167.73

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Solution

The fourth proportional to 1,561.39, 2,154.86 and 1,167.73 is: 1,611.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.39 : 2,154.86 = 1,167.73 : x
  2. Step 2: Convert to fraction form
    1,561.39/2,154.86 = 1,167.73/x
  3. Step 3: Cross multiply
    1,561.39x = 2,154.86 × 1,167.73
  4. Step 4: Simplify right side
    1,561.39x = 2,516,294.67
  5. Step 5: Solve for x
    x = 2,516,294.67/1,561.39
  6. Step 6: Final answer
    x = 1,611.57

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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.