Home / 8,579.10-12,875.85-4,200.30

Finding the Fourth Proportional to 8,579.10, 12,875.85 and 4,200.30

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Solution

The fourth proportional to 8,579.10, 12,875.85 and 4,200.30 is: 6,303.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.10 : 12,875.85 = 4,200.30 : x
  2. Step 2: Convert to fraction form
    8,579.10/12,875.85 = 4,200.30/x
  3. Step 3: Cross multiply
    8,579.10x = 12,875.85 × 4,200.30
  4. Step 4: Simplify right side
    8,579.10x = 54,082,432.76
  5. Step 5: Solve for x
    x = 54,082,432.76/8,579.10
  6. Step 6: Final answer
    x = 6,303.98

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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.