Home / 2,148.75-2,966.36-2,019.15

Finding the Fourth Proportional to 2,148.75, 2,966.36 and 2,019.15

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Solution

The fourth proportional to 2,148.75, 2,966.36 and 2,019.15 is: 2,787.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.75 : 2,966.36 = 2,019.15 : x
  2. Step 2: Convert to fraction form
    2,148.75/2,966.36 = 2,019.15/x
  3. Step 3: Cross multiply
    2,148.75x = 2,966.36 × 2,019.15
  4. Step 4: Simplify right side
    2,148.75x = 5,989,515.70
  5. Step 5: Solve for x
    x = 5,989,515.70/2,148.75
  6. Step 6: Final answer
    x = 2,787.44

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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.