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Finding the Fourth Proportional to 2,742.47, 4,114.13 and 893.15

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Solution

The fourth proportional to 2,742.47, 4,114.13 and 893.15 is: 1,339.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.47 : 4,114.13 = 893.15 : x
  2. Step 2: Convert to fraction form
    2,742.47/4,114.13 = 893.15/x
  3. Step 3: Cross multiply
    2,742.47x = 4,114.13 × 893.15
  4. Step 4: Simplify right side
    2,742.47x = 3,674,547.73
  5. Step 5: Solve for x
    x = 3,674,547.73/2,742.47
  6. Step 6: Final answer
    x = 1,339.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.