Home / 1,378.50-2,066.49-1,258.26

Finding the Fourth Proportional to 1,378.50, 2,066.49 and 1,258.26

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Solution

The fourth proportional to 1,378.50, 2,066.49 and 1,258.26 is: 1,886.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.50 : 2,066.49 = 1,258.26 : x
  2. Step 2: Convert to fraction form
    1,378.50/2,066.49 = 1,258.26/x
  3. Step 3: Cross multiply
    1,378.50x = 2,066.49 × 1,258.26
  4. Step 4: Simplify right side
    1,378.50x = 2,600,181.71
  5. Step 5: Solve for x
    x = 2,600,181.71/1,378.50
  6. Step 6: Final answer
    x = 1,886.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.