Home / 1,521.28-2,098.56-1,056.64

Finding the Fourth Proportional to 1,521.28, 2,098.56 and 1,056.64

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Solution

The fourth proportional to 1,521.28, 2,098.56 and 1,056.64 is: 1,457.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,521.28 : 2,098.56 = 1,056.64 : x
  2. Step 2: Convert to fraction form
    1,521.28/2,098.56 = 1,056.64/x
  3. Step 3: Cross multiply
    1,521.28x = 2,098.56 × 1,056.64
  4. Step 4: Simplify right side
    1,521.28x = 2,217,422.44
  5. Step 5: Solve for x
    x = 2,217,422.44/1,521.28
  6. Step 6: Final answer
    x = 1,457.60

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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.