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Finding the Fourth Proportional to 1,865.62, 2,574.62 and 1,069.07

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Solution

The fourth proportional to 1,865.62, 2,574.62 and 1,069.07 is: 1,475.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,865.62 : 2,574.62 = 1,069.07 : x
  2. Step 2: Convert to fraction form
    1,865.62/2,574.62 = 1,069.07/x
  3. Step 3: Cross multiply
    1,865.62x = 2,574.62 × 1,069.07
  4. Step 4: Simplify right side
    1,865.62x = 2,752,449.00
  5. Step 5: Solve for x
    x = 2,752,449.00/1,865.62
  6. Step 6: Final answer
    x = 1,475.35

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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.