Home / 1,439.84-2,156.52-1,372.88

Finding the Fourth Proportional to 1,439.84, 2,156.52 and 1,372.88

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Solution

The fourth proportional to 1,439.84, 2,156.52 and 1,372.88 is: 2,056.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.84 : 2,156.52 = 1,372.88 : x
  2. Step 2: Convert to fraction form
    1,439.84/2,156.52 = 1,372.88/x
  3. Step 3: Cross multiply
    1,439.84x = 2,156.52 × 1,372.88
  4. Step 4: Simplify right side
    1,439.84x = 2,960,643.18
  5. Step 5: Solve for x
    x = 2,960,643.18/1,439.84
  6. Step 6: Final answer
    x = 2,056.23

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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.