Home / 8,988.80-12,415.66-6,347.99

Finding the Fourth Proportional to 8,988.80, 12,415.66 and 6,347.99

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Solution

The fourth proportional to 8,988.80, 12,415.66 and 6,347.99 is: 8,768.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.80 : 12,415.66 = 6,347.99 : x
  2. Step 2: Convert to fraction form
    8,988.80/12,415.66 = 6,347.99/x
  3. Step 3: Cross multiply
    8,988.80x = 12,415.66 × 6,347.99
  4. Step 4: Simplify right side
    8,988.80x = 78,814,500.69
  5. Step 5: Solve for x
    x = 78,814,500.69/8,988.80
  6. Step 6: Final answer
    x = 8,768.08

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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.