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Finding the Fourth Proportional to 1,812.48, 2,499.48 and 1,148.12

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Solution

The fourth proportional to 1,812.48, 2,499.48 and 1,148.12 is: 1,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.48 : 2,499.48 = 1,148.12 : x
  2. Step 2: Convert to fraction form
    1,812.48/2,499.48 = 1,148.12/x
  3. Step 3: Cross multiply
    1,812.48x = 2,499.48 × 1,148.12
  4. Step 4: Simplify right side
    1,812.48x = 2,869,702.98
  5. Step 5: Solve for x
    x = 2,869,702.98/1,812.48
  6. Step 6: Final answer
    x = 1,583.30

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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.