Home / 1,749.20-2,407.56-1,648.40

Finding the Fourth Proportional to 1,749.20, 2,407.56 and 1,648.40

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Solution

The fourth proportional to 1,749.20, 2,407.56 and 1,648.40 is: 2,268.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,749.20 : 2,407.56 = 1,648.40 : x
  2. Step 2: Convert to fraction form
    1,749.20/2,407.56 = 1,648.40/x
  3. Step 3: Cross multiply
    1,749.20x = 2,407.56 × 1,648.40
  4. Step 4: Simplify right side
    1,749.20x = 3,968,621.90
  5. Step 5: Solve for x
    x = 3,968,621.90/1,749.20
  6. Step 6: Final answer
    x = 2,268.82

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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.