Home / 7,909.76-10,919.90-5,395.57

Finding the Fourth Proportional to 7,909.76, 10,919.90 and 5,395.57

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Solution

The fourth proportional to 7,909.76, 10,919.90 and 5,395.57 is: 7,448.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,909.76 : 10,919.90 = 5,395.57 : x
  2. Step 2: Convert to fraction form
    7,909.76/10,919.90 = 5,395.57/x
  3. Step 3: Cross multiply
    7,909.76x = 10,919.90 × 5,395.57
  4. Step 4: Simplify right side
    7,909.76x = 58,919,084.84
  5. Step 5: Solve for x
    x = 58,919,084.84/7,909.76
  6. Step 6: Final answer
    x = 7,448.91

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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.