Home / 2,870.15-4,305.36-1,021.28

Finding the Fourth Proportional to 2,870.15, 4,305.36 and 1,021.28

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Solution

The fourth proportional to 2,870.15, 4,305.36 and 1,021.28 is: 1,531.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.15 : 4,305.36 = 1,021.28 : x
  2. Step 2: Convert to fraction form
    2,870.15/4,305.36 = 1,021.28/x
  3. Step 3: Cross multiply
    2,870.15x = 4,305.36 × 1,021.28
  4. Step 4: Simplify right side
    2,870.15x = 4,396,978.06
  5. Step 5: Solve for x
    x = 4,396,978.06/2,870.15
  6. Step 6: Final answer
    x = 1,531.97

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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.