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Finding the Fourth Proportional to 5,339.50, 7,368.71 and 2,981.79

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Solution

The fourth proportional to 5,339.50, 7,368.71 and 2,981.79 is: 4,114.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,339.50 : 7,368.71 = 2,981.79 : x
  2. Step 2: Convert to fraction form
    5,339.50/7,368.71 = 2,981.79/x
  3. Step 3: Cross multiply
    5,339.50x = 7,368.71 × 2,981.79
  4. Step 4: Simplify right side
    5,339.50x = 21,971,930.88
  5. Step 5: Solve for x
    x = 21,971,930.88/5,339.50
  6. Step 6: Final answer
    x = 4,114.98

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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.