Home / 2,568.90-3,545.07-1,389.96

Finding the Fourth Proportional to 2,568.90, 3,545.07 and 1,389.96

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Solution

The fourth proportional to 2,568.90, 3,545.07 and 1,389.96 is: 1,918.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,568.90 : 3,545.07 = 1,389.96 : x
  2. Step 2: Convert to fraction form
    2,568.90/3,545.07 = 1,389.96/x
  3. Step 3: Cross multiply
    2,568.90x = 3,545.07 × 1,389.96
  4. Step 4: Simplify right side
    2,568.90x = 4,927,505.50
  5. Step 5: Solve for x
    x = 4,927,505.50/2,568.90
  6. Step 6: Final answer
    x = 1,918.14

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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.