Home / 8,990.18-12,398.36-5,633.35

Finding the Fourth Proportional to 8,990.18, 12,398.36 and 5,633.35

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Solution

The fourth proportional to 8,990.18, 12,398.36 and 5,633.35 is: 7,768.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,990.18 : 12,398.36 = 5,633.35 : x
  2. Step 2: Convert to fraction form
    8,990.18/12,398.36 = 5,633.35/x
  3. Step 3: Cross multiply
    8,990.18x = 12,398.36 × 5,633.35
  4. Step 4: Simplify right side
    8,990.18x = 69,844,284.39
  5. Step 5: Solve for x
    x = 69,844,284.39/8,990.18
  6. Step 6: Final answer
    x = 7,768.96

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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.