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Finding the Fourth Proportional to 1,872.48, 2,806.20 and 1,007.40

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Solution

The fourth proportional to 1,872.48, 2,806.20 and 1,007.40 is: 1,509.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.48 : 2,806.20 = 1,007.40 : x
  2. Step 2: Convert to fraction form
    1,872.48/2,806.20 = 1,007.40/x
  3. Step 3: Cross multiply
    1,872.48x = 2,806.20 × 1,007.40
  4. Step 4: Simplify right side
    1,872.48x = 2,826,965.88
  5. Step 5: Solve for x
    x = 2,826,965.88/1,872.48
  6. Step 6: Final answer
    x = 1,509.74

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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.