Home / 2,026.40-2,796.28-1,187.15

Finding the Fourth Proportional to 2,026.40, 2,796.28 and 1,187.15

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Solution

The fourth proportional to 2,026.40, 2,796.28 and 1,187.15 is: 1,638.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,026.40 : 2,796.28 = 1,187.15 : x
  2. Step 2: Convert to fraction form
    2,026.40/2,796.28 = 1,187.15/x
  3. Step 3: Cross multiply
    2,026.40x = 2,796.28 × 1,187.15
  4. Step 4: Simplify right side
    2,026.40x = 3,319,586.85
  5. Step 5: Solve for x
    x = 3,319,586.85/2,026.40
  6. Step 6: Final answer
    x = 1,638.17

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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.