Home / 5,316.71-7,347.20-3,988.11

Finding the Fourth Proportional to 5,316.71, 7,347.20 and 3,988.11

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Solution

The fourth proportional to 5,316.71, 7,347.20 and 3,988.11 is: 5,511.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.71 : 7,347.20 = 3,988.11 : x
  2. Step 2: Convert to fraction form
    5,316.71/7,347.20 = 3,988.11/x
  3. Step 3: Cross multiply
    5,316.71x = 7,347.20 × 3,988.11
  4. Step 4: Simplify right side
    5,316.71x = 29,301,421.85
  5. Step 5: Solve for x
    x = 29,301,421.85/5,316.71
  6. Step 6: Final answer
    x = 5,511.19

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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.