Home / 2,870.24-4,305.76-1,020.80

Finding the Fourth Proportional to 2,870.24, 4,305.76 and 1,020.80

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Solution

The fourth proportional to 2,870.24, 4,305.76 and 1,020.80 is: 1,531.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.24 : 4,305.76 = 1,020.80 : x
  2. Step 2: Convert to fraction form
    2,870.24/4,305.76 = 1,020.80/x
  3. Step 3: Cross multiply
    2,870.24x = 4,305.76 × 1,020.80
  4. Step 4: Simplify right side
    2,870.24x = 4,395,328.02
  5. Step 5: Solve for x
    x = 4,395,328.02/2,870.24
  6. Step 6: Final answer
    x = 1,531.35

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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.