Home / 1,558.28-2,148.90-1,053.56

Finding the Fourth Proportional to 1,558.28, 2,148.90 and 1,053.56

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Solution

The fourth proportional to 1,558.28, 2,148.90 and 1,053.56 is: 1,452.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.28 : 2,148.90 = 1,053.56 : x
  2. Step 2: Convert to fraction form
    1,558.28/2,148.90 = 1,053.56/x
  3. Step 3: Cross multiply
    1,558.28x = 2,148.90 × 1,053.56
  4. Step 4: Simplify right side
    1,558.28x = 2,263,995.08
  5. Step 5: Solve for x
    x = 2,263,995.08/1,558.28
  6. Step 6: Final answer
    x = 1,452.88

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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.