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Finding the Fourth Proportional to 2,689.60, 4,035.93 and 1,045.93

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Solution

The fourth proportional to 2,689.60, 4,035.93 and 1,045.93 is: 1,569.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.60 : 4,035.93 = 1,045.93 : x
  2. Step 2: Convert to fraction form
    2,689.60/4,035.93 = 1,045.93/x
  3. Step 3: Cross multiply
    2,689.60x = 4,035.93 × 1,045.93
  4. Step 4: Simplify right side
    2,689.60x = 4,221,300.26
  5. Step 5: Solve for x
    x = 4,221,300.26/2,689.60
  6. Step 6: Final answer
    x = 1,569.49

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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.