Home / 7,746.42-10,690.11-4,209.78

Finding the Fourth Proportional to 7,746.42, 10,690.11 and 4,209.78

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Solution

The fourth proportional to 7,746.42, 10,690.11 and 4,209.78 is: 5,809.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,746.42 : 10,690.11 = 4,209.78 : x
  2. Step 2: Convert to fraction form
    7,746.42/10,690.11 = 4,209.78/x
  3. Step 3: Cross multiply
    7,746.42x = 10,690.11 × 4,209.78
  4. Step 4: Simplify right side
    7,746.42x = 45,003,011.28
  5. Step 5: Solve for x
    x = 45,003,011.28/7,746.42
  6. Step 6: Final answer
    x = 5,809.52

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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.