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Finding the Fourth Proportional to 2,520.57, 3,780.75 and 1,973.19

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Solution

The fourth proportional to 2,520.57, 3,780.75 and 1,973.19 is: 2,959.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.57 : 3,780.75 = 1,973.19 : x
  2. Step 2: Convert to fraction form
    2,520.57/3,780.75 = 1,973.19/x
  3. Step 3: Cross multiply
    2,520.57x = 3,780.75 × 1,973.19
  4. Step 4: Simplify right side
    2,520.57x = 7,460,138.09
  5. Step 5: Solve for x
    x = 7,460,138.09/2,520.57
  6. Step 6: Final answer
    x = 2,959.70

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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.