Home / 8,420.04-12,630.65-3,154.95

Finding the Fourth Proportional to 8,420.04, 12,630.65 and 3,154.95

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Solution

The fourth proportional to 8,420.04, 12,630.65 and 3,154.95 is: 4,732.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.04 : 12,630.65 = 3,154.95 : x
  2. Step 2: Convert to fraction form
    8,420.04/12,630.65 = 3,154.95/x
  3. Step 3: Cross multiply
    8,420.04x = 12,630.65 × 3,154.95
  4. Step 4: Simplify right side
    8,420.04x = 39,849,053.44
  5. Step 5: Solve for x
    x = 39,849,053.44/8,420.04
  6. Step 6: Final answer
    x = 4,732.64

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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.