Home / 8,911.04-12,289.80-6,678.24

Finding the Fourth Proportional to 8,911.04, 12,289.80 and 6,678.24

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Solution

The fourth proportional to 8,911.04, 12,289.80 and 6,678.24 is: 9,210.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.04 : 12,289.80 = 6,678.24 : x
  2. Step 2: Convert to fraction form
    8,911.04/12,289.80 = 6,678.24/x
  3. Step 3: Cross multiply
    8,911.04x = 12,289.80 × 6,678.24
  4. Step 4: Simplify right side
    8,911.04x = 82,074,233.95
  5. Step 5: Solve for x
    x = 82,074,233.95/8,911.04
  6. Step 6: Final answer
    x = 9,210.40

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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.