Home / 5,310.79-7,330.88-3,988.31

Finding the Fourth Proportional to 5,310.79, 7,330.88 and 3,988.31

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Solution

The fourth proportional to 5,310.79, 7,330.88 and 3,988.31 is: 5,505.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,310.79 : 7,330.88 = 3,988.31 : x
  2. Step 2: Convert to fraction form
    5,310.79/7,330.88 = 3,988.31/x
  3. Step 3: Cross multiply
    5,310.79x = 7,330.88 × 3,988.31
  4. Step 4: Simplify right side
    5,310.79x = 29,237,820.40
  5. Step 5: Solve for x
    x = 29,237,820.40/5,310.79
  6. Step 6: Final answer
    x = 5,505.36

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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.