Home / 8,880.24-12,259.20-6,987.60

Finding the Fourth Proportional to 8,880.24, 12,259.20 and 6,987.60

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Solution

The fourth proportional to 8,880.24, 12,259.20 and 6,987.60 is: 9,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,880.24 : 12,259.20 = 6,987.60 : x
  2. Step 2: Convert to fraction form
    8,880.24/12,259.20 = 6,987.60/x
  3. Step 3: Cross multiply
    8,880.24x = 12,259.20 × 6,987.60
  4. Step 4: Simplify right side
    8,880.24x = 85,662,385.92
  5. Step 5: Solve for x
    x = 85,662,385.92/8,880.24
  6. Step 6: Final answer
    x = 9,646.40

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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.