Home / 7,616.40-11,421.72-2,685.12

Finding the Fourth Proportional to 7,616.40, 11,421.72 and 2,685.12

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Solution

The fourth proportional to 7,616.40, 11,421.72 and 2,685.12 is: 4,026.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,616.40 : 11,421.72 = 2,685.12 : x
  2. Step 2: Convert to fraction form
    7,616.40/11,421.72 = 2,685.12/x
  3. Step 3: Cross multiply
    7,616.40x = 11,421.72 × 2,685.12
  4. Step 4: Simplify right side
    7,616.40x = 30,668,688.81
  5. Step 5: Solve for x
    x = 30,668,688.81/7,616.40
  6. Step 6: Final answer
    x = 4,026.66

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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.