Home / 8,988.60-12,408.84-5,633.40

Finding the Fourth Proportional to 8,988.60, 12,408.84 and 5,633.40

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Solution

The fourth proportional to 8,988.60, 12,408.84 and 5,633.40 is: 7,776.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.60 : 12,408.84 = 5,633.40 : x
  2. Step 2: Convert to fraction form
    8,988.60/12,408.84 = 5,633.40/x
  3. Step 3: Cross multiply
    8,988.60x = 12,408.84 × 5,633.40
  4. Step 4: Simplify right side
    8,988.60x = 69,903,959.26
  5. Step 5: Solve for x
    x = 69,903,959.26/8,988.60
  6. Step 6: Final answer
    x = 7,776.96

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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.