Home / 5,280.68-7,921.74-1,817

Finding the Fourth Proportional to 5,280.68, 7,921.74 and 1,817

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Solution

The fourth proportional to 5,280.68, 7,921.74 and 1,817 is: 2,725.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.68 : 7,921.74 = 1,817 : x
  2. Step 2: Convert to fraction form
    5,280.68/7,921.74 = 1,817/x
  3. Step 3: Cross multiply
    5,280.68x = 7,921.74 × 1,817
  4. Step 4: Simplify right side
    5,280.68x = 14,393,801.58
  5. Step 5: Solve for x
    x = 14,393,801.58/5,280.68
  6. Step 6: Final answer
    x = 2,725.75

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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.