Home / 2,640.18-3,644.34-1,756.20

Finding the Fourth Proportional to 2,640.18, 3,644.34 and 1,756.20

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Solution

The fourth proportional to 2,640.18, 3,644.34 and 1,756.20 is: 2,424.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.18 : 3,644.34 = 1,756.20 : x
  2. Step 2: Convert to fraction form
    2,640.18/3,644.34 = 1,756.20/x
  3. Step 3: Cross multiply
    2,640.18x = 3,644.34 × 1,756.20
  4. Step 4: Simplify right side
    2,640.18x = 6,400,189.91
  5. Step 5: Solve for x
    x = 6,400,189.91/2,640.18
  6. Step 6: Final answer
    x = 2,424.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.