Home / 8,980.10-12,395.36-5,397.68

Finding the Fourth Proportional to 8,980.10, 12,395.36 and 5,397.68

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Solution

The fourth proportional to 8,980.10, 12,395.36 and 5,397.68 is: 7,450.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.10 : 12,395.36 = 5,397.68 : x
  2. Step 2: Convert to fraction form
    8,980.10/12,395.36 = 5,397.68/x
  3. Step 3: Cross multiply
    8,980.10x = 12,395.36 × 5,397.68
  4. Step 4: Simplify right side
    8,980.10x = 66,906,186.76
  5. Step 5: Solve for x
    x = 66,906,186.76/8,980.10
  6. Step 6: Final answer
    x = 7,450.49

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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.