Home / 8,315.20-12,457.68-4,841.92

Finding the Fourth Proportional to 8,315.20, 12,457.68 and 4,841.92

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Solution

The fourth proportional to 8,315.20, 12,457.68 and 4,841.92 is: 7,254.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.20 : 12,457.68 = 4,841.92 : x
  2. Step 2: Convert to fraction form
    8,315.20/12,457.68 = 4,841.92/x
  3. Step 3: Cross multiply
    8,315.20x = 12,457.68 × 4,841.92
  4. Step 4: Simplify right side
    8,315.20x = 60,319,089.95
  5. Step 5: Solve for x
    x = 60,319,089.95/8,315.20
  6. Step 6: Final answer
    x = 7,254.08

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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.