Home / 8,315.19-12,475.15-2,772.16

Finding the Fourth Proportional to 8,315.19, 12,475.15 and 2,772.16

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Solution

The fourth proportional to 8,315.19, 12,475.15 and 2,772.16 is: 4,159.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.19 : 12,475.15 = 2,772.16 : x
  2. Step 2: Convert to fraction form
    8,315.19/12,475.15 = 2,772.16/x
  3. Step 3: Cross multiply
    8,315.19x = 12,475.15 × 2,772.16
  4. Step 4: Simplify right side
    8,315.19x = 34,583,073.71
  5. Step 5: Solve for x
    x = 34,583,073.71/8,315.19
  6. Step 6: Final answer
    x = 4,159.02

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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.