Home / 3,778.48-5,666.64-1,587.20

Finding the Fourth Proportional to 3,778.48, 5,666.64 and 1,587.20

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Solution

The fourth proportional to 3,778.48, 5,666.64 and 1,587.20 is: 2,380.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.48 : 5,666.64 = 1,587.20 : x
  2. Step 2: Convert to fraction form
    3,778.48/5,666.64 = 1,587.20/x
  3. Step 3: Cross multiply
    3,778.48x = 5,666.64 × 1,587.20
  4. Step 4: Simplify right side
    3,778.48x = 8,994,091.01
  5. Step 5: Solve for x
    x = 8,994,091.01/3,778.48
  6. Step 6: Final answer
    x = 2,380.35

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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.