Home / 1,144.80-1,579.68-947.52

Finding the Fourth Proportional to 1,144.80, 1,579.68 and 947.52

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Solution

The fourth proportional to 1,144.80, 1,579.68 and 947.52 is: 1,307.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.80 : 1,579.68 = 947.52 : x
  2. Step 2: Convert to fraction form
    1,144.80/1,579.68 = 947.52/x
  3. Step 3: Cross multiply
    1,144.80x = 1,579.68 × 947.52
  4. Step 4: Simplify right side
    1,144.80x = 1,496,778.39
  5. Step 5: Solve for x
    x = 1,496,778.39/1,144.80
  6. Step 6: Final answer
    x = 1,307.46

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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.