Home / 1,787.12-2,681.16-1,615.76

Finding the Fourth Proportional to 1,787.12, 2,681.16 and 1,615.76

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Solution

The fourth proportional to 1,787.12, 2,681.16 and 1,615.76 is: 2,424.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.12 : 2,681.16 = 1,615.76 : x
  2. Step 2: Convert to fraction form
    1,787.12/2,681.16 = 1,615.76/x
  3. Step 3: Cross multiply
    1,787.12x = 2,681.16 × 1,615.76
  4. Step 4: Simplify right side
    1,787.12x = 4,332,111.08
  5. Step 5: Solve for x
    x = 4,332,111.08/1,787.12
  6. Step 6: Final answer
    x = 2,424.07

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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.