Home / 8,385.48-12,579.12-6,309.66

Finding the Fourth Proportional to 8,385.48, 12,579.12 and 6,309.66

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Solution

The fourth proportional to 8,385.48, 12,579.12 and 6,309.66 is: 9,465.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.48 : 12,579.12 = 6,309.66 : x
  2. Step 2: Convert to fraction form
    8,385.48/12,579.12 = 6,309.66/x
  3. Step 3: Cross multiply
    8,385.48x = 12,579.12 × 6,309.66
  4. Step 4: Simplify right side
    8,385.48x = 79,369,970.30
  5. Step 5: Solve for x
    x = 79,369,970.30/8,385.48
  6. Step 6: Final answer
    x = 9,465.17

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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.