Home / 2,568.40-3,544.38-1,389.46

Finding the Fourth Proportional to 2,568.40, 3,544.38 and 1,389.46

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Solution

The fourth proportional to 2,568.40, 3,544.38 and 1,389.46 is: 1,917.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,568.40 : 3,544.38 = 1,389.46 : x
  2. Step 2: Convert to fraction form
    2,568.40/3,544.38 = 1,389.46/x
  3. Step 3: Cross multiply
    2,568.40x = 3,544.38 × 1,389.46
  4. Step 4: Simplify right side
    2,568.40x = 4,924,774.23
  5. Step 5: Solve for x
    x = 4,924,774.23/2,568.40
  6. Step 6: Final answer
    x = 1,917.45

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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.