Home / 7,742.16-10,685.04-4,910.40

Finding the Fourth Proportional to 7,742.16, 10,685.04 and 4,910.40

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Solution

The fourth proportional to 7,742.16, 10,685.04 and 4,910.40 is: 6,776.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.16 : 10,685.04 = 4,910.40 : x
  2. Step 2: Convert to fraction form
    7,742.16/10,685.04 = 4,910.40/x
  3. Step 3: Cross multiply
    7,742.16x = 10,685.04 × 4,910.40
  4. Step 4: Simplify right side
    7,742.16x = 52,467,820.42
  5. Step 5: Solve for x
    x = 52,467,820.42/7,742.16
  6. Step 6: Final answer
    x = 6,776.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.