Home / 8,577.20-12,864.72-4,678.40

Finding the Fourth Proportional to 8,577.20, 12,864.72 and 4,678.40

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Solution

The fourth proportional to 8,577.20, 12,864.72 and 4,678.40 is: 7,017.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,577.20 : 12,864.72 = 4,678.40 : x
  2. Step 2: Convert to fraction form
    8,577.20/12,864.72 = 4,678.40/x
  3. Step 3: Cross multiply
    8,577.20x = 12,864.72 × 4,678.40
  4. Step 4: Simplify right side
    8,577.20x = 60,186,306.05
  5. Step 5: Solve for x
    x = 60,186,306.05/8,577.20
  6. Step 6: Final answer
    x = 7,017.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.