Home / 5,285.52-7,928.21-1,587.60

Finding the Fourth Proportional to 5,285.52, 7,928.21 and 1,587.60

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Solution

The fourth proportional to 5,285.52, 7,928.21 and 1,587.60 is: 2,381.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.52 : 7,928.21 = 1,587.60 : x
  2. Step 2: Convert to fraction form
    5,285.52/7,928.21 = 1,587.60/x
  3. Step 3: Cross multiply
    5,285.52x = 7,928.21 × 1,587.60
  4. Step 4: Simplify right side
    5,285.52x = 12,586,830.17
  5. Step 5: Solve for x
    x = 12,586,830.17/5,285.52
  6. Step 6: Final answer
    x = 2,381.38

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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.