Home / 2,648.15-3,970.40-1,538.24

Finding the Fourth Proportional to 2,648.15, 3,970.40 and 1,538.24

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Solution

The fourth proportional to 2,648.15, 3,970.40 and 1,538.24 is: 2,306.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,648.15 : 3,970.40 = 1,538.24 : x
  2. Step 2: Convert to fraction form
    2,648.15/3,970.40 = 1,538.24/x
  3. Step 3: Cross multiply
    2,648.15x = 3,970.40 × 1,538.24
  4. Step 4: Simplify right side
    2,648.15x = 6,107,430.33
  5. Step 5: Solve for x
    x = 6,107,430.33/2,648.15
  6. Step 6: Final answer
    x = 2,306.31

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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.