Home / 7,742.78-10,674.45-5,320.07

Finding the Fourth Proportional to 7,742.78, 10,674.45 and 5,320.07

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Solution

The fourth proportional to 7,742.78, 10,674.45 and 5,320.07 is: 7,334.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,742.78 : 10,674.45 = 5,320.07 : x
  2. Step 2: Convert to fraction form
    7,742.78/10,674.45 = 5,320.07/x
  3. Step 3: Cross multiply
    7,742.78x = 10,674.45 × 5,320.07
  4. Step 4: Simplify right side
    7,742.78x = 56,788,767.84
  5. Step 5: Solve for x
    x = 56,788,767.84/7,742.78
  6. Step 6: Final answer
    x = 7,334.42

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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.