Home / 5,316.60-7,347.02-3,988

Finding the Fourth Proportional to 5,316.60, 7,347.02 and 3,988

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Solution

The fourth proportional to 5,316.60, 7,347.02 and 3,988 is: 5,511.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.60 : 7,347.02 = 3,988 : x
  2. Step 2: Convert to fraction form
    5,316.60/7,347.02 = 3,988/x
  3. Step 3: Cross multiply
    5,316.60x = 7,347.02 × 3,988
  4. Step 4: Simplify right side
    5,316.60x = 29,299,915.76
  5. Step 5: Solve for x
    x = 29,299,915.76/5,316.60
  6. Step 6: Final answer
    x = 5,511.03

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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.