Home / 5,316.48-7,346.86-3,987.88

Finding the Fourth Proportional to 5,316.48, 7,346.86 and 3,987.88

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Solution

The fourth proportional to 5,316.48, 7,346.86 and 3,987.88 is: 5,510.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,316.48 : 7,346.86 = 3,987.88 : x
  2. Step 2: Convert to fraction form
    5,316.48/7,346.86 = 3,987.88/x
  3. Step 3: Cross multiply
    5,316.48x = 7,346.86 × 3,987.88
  4. Step 4: Simplify right side
    5,316.48x = 29,298,396.06
  5. Step 5: Solve for x
    x = 29,298,396.06/5,316.48
  6. Step 6: Final answer
    x = 5,510.86

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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.