Home / 1,457.12-2,011.72-1,124.96

Finding the Fourth Proportional to 1,457.12, 2,011.72 and 1,124.96

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Solution

The fourth proportional to 1,457.12, 2,011.72 and 1,124.96 is: 1,553.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,457.12 : 2,011.72 = 1,124.96 : x
  2. Step 2: Convert to fraction form
    1,457.12/2,011.72 = 1,124.96/x
  3. Step 3: Cross multiply
    1,457.12x = 2,011.72 × 1,124.96
  4. Step 4: Simplify right side
    1,457.12x = 2,263,104.53
  5. Step 5: Solve for x
    x = 2,263,104.53/1,457.12
  6. Step 6: Final answer
    x = 1,553.14

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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.