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Finding the Fourth Proportional to 7,227.19, 9,973.52 and 3,915.19

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Solution

The fourth proportional to 7,227.19, 9,973.52 and 3,915.19 is: 5,402.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,227.19 : 9,973.52 = 3,915.19 : x
  2. Step 2: Convert to fraction form
    7,227.19/9,973.52 = 3,915.19/x
  3. Step 3: Cross multiply
    7,227.19x = 9,973.52 × 3,915.19
  4. Step 4: Simplify right side
    7,227.19x = 39,048,225.77
  5. Step 5: Solve for x
    x = 39,048,225.77/7,227.19
  6. Step 6: Final answer
    x = 5,402.96

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1.5x scale

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.