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Finding the Fourth Proportional to 3,750.78, 5,627.70 and 1,559.10

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Solution

The fourth proportional to 3,750.78, 5,627.70 and 1,559.10 is: 2,339.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,750.78 : 5,627.70 = 1,559.10 : x
  2. Step 2: Convert to fraction form
    3,750.78/5,627.70 = 1,559.10/x
  3. Step 3: Cross multiply
    3,750.78x = 5,627.70 × 1,559.10
  4. Step 4: Simplify right side
    3,750.78x = 8,774,147.07
  5. Step 5: Solve for x
    x = 8,774,147.07/3,750.78
  6. Step 6: Final answer
    x = 2,339.29

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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.