Home / 1,445.04-2,157.70-1,149.20

Finding the Fourth Proportional to 1,445.04, 2,157.70 and 1,149.20

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Solution

The fourth proportional to 1,445.04, 2,157.70 and 1,149.20 is: 1,715.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.04 : 2,157.70 = 1,149.20 : x
  2. Step 2: Convert to fraction form
    1,445.04/2,157.70 = 1,149.20/x
  3. Step 3: Cross multiply
    1,445.04x = 2,157.70 × 1,149.20
  4. Step 4: Simplify right side
    1,445.04x = 2,479,628.84
  5. Step 5: Solve for x
    x = 2,479,628.84/1,445.04
  6. Step 6: Final answer
    x = 1,715.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.