Home / 7,278.01-10,860.73-6,491.70

Finding the Fourth Proportional to 7,278.01, 10,860.73 and 6,491.70

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Solution

The fourth proportional to 7,278.01, 10,860.73 and 6,491.70 is: 9,687.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278.01 : 10,860.73 = 6,491.70 : x
  2. Step 2: Convert to fraction form
    7,278.01/10,860.73 = 6,491.70/x
  3. Step 3: Cross multiply
    7,278.01x = 10,860.73 × 6,491.70
  4. Step 4: Simplify right side
    7,278.01x = 70,504,584.71
  5. Step 5: Solve for x
    x = 70,504,584.71/7,278.01
  6. Step 6: Final answer
    x = 9,687.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.