Home / 5,283.36-7,924.68-1,387.80

Finding the Fourth Proportional to 5,283.36, 7,924.68 and 1,387.80

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Solution

The fourth proportional to 5,283.36, 7,924.68 and 1,387.80 is: 2,081.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,283.36 : 7,924.68 = 1,387.80 : x
  2. Step 2: Convert to fraction form
    5,283.36/7,924.68 = 1,387.80/x
  3. Step 3: Cross multiply
    5,283.36x = 7,924.68 × 1,387.80
  4. Step 4: Simplify right side
    5,283.36x = 10,997,870.90
  5. Step 5: Solve for x
    x = 10,997,870.90/5,283.36
  6. Step 6: Final answer
    x = 2,081.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.