Home / 7,685.13-11,516.54-4,172.16

Finding the Fourth Proportional to 7,685.13, 11,516.54 and 4,172.16

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Solution

The fourth proportional to 7,685.13, 11,516.54 and 4,172.16 is: 6,252.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,685.13 : 11,516.54 = 4,172.16 : x
  2. Step 2: Convert to fraction form
    7,685.13/11,516.54 = 4,172.16/x
  3. Step 3: Cross multiply
    7,685.13x = 11,516.54 × 4,172.16
  4. Step 4: Simplify right side
    7,685.13x = 48,048,826.67
  5. Step 5: Solve for x
    x = 48,048,826.67/7,685.13
  6. Step 6: Final answer
    x = 6,252.18

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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.