Home / 2,854.12-4,280.40-1,210.60

Finding the Fourth Proportional to 2,854.12, 4,280.40 and 1,210.60

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Solution

The fourth proportional to 2,854.12, 4,280.40 and 1,210.60 is: 1,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.12 : 4,280.40 = 1,210.60 : x
  2. Step 2: Convert to fraction form
    2,854.12/4,280.40 = 1,210.60/x
  3. Step 3: Cross multiply
    2,854.12x = 4,280.40 × 1,210.60
  4. Step 4: Simplify right side
    2,854.12x = 5,181,852.24
  5. Step 5: Solve for x
    x = 5,181,852.24/2,854.12
  6. Step 6: Final answer
    x = 1,815.57

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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.