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Finding the Fourth Proportional to 1,823.90, 2,516.90 and 1,116.92

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Solution

The fourth proportional to 1,823.90, 2,516.90 and 1,116.92 is: 1,541.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,823.90 : 2,516.90 = 1,116.92 : x
  2. Step 2: Convert to fraction form
    1,823.90/2,516.90 = 1,116.92/x
  3. Step 3: Cross multiply
    1,823.90x = 2,516.90 × 1,116.92
  4. Step 4: Simplify right side
    1,823.90x = 2,811,175.95
  5. Step 5: Solve for x
    x = 2,811,175.95/1,823.90
  6. Step 6: Final answer
    x = 1,541.30

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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.