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Finding the Fourth Proportional to 3,007.52, 4,510.64 and 815.76

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Solution

The fourth proportional to 3,007.52, 4,510.64 and 815.76 is: 1,223.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,007.52 : 4,510.64 = 815.76 : x
  2. Step 2: Convert to fraction form
    3,007.52/4,510.64 = 815.76/x
  3. Step 3: Cross multiply
    3,007.52x = 4,510.64 × 815.76
  4. Step 4: Simplify right side
    3,007.52x = 3,679,599.69
  5. Step 5: Solve for x
    x = 3,679,599.69/3,007.52
  6. Step 6: Final answer
    x = 1,223.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.