Home / 2,878.90-4,298.85-2,287.26

Finding the Fourth Proportional to 2,878.90, 4,298.85 and 2,287.26

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Solution

The fourth proportional to 2,878.90, 4,298.85 and 2,287.26 is: 3,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,878.90 : 4,298.85 = 2,287.26 : x
  2. Step 2: Convert to fraction form
    2,878.90/4,298.85 = 2,287.26/x
  3. Step 3: Cross multiply
    2,878.90x = 4,298.85 × 2,287.26
  4. Step 4: Simplify right side
    2,878.90x = 9,832,587.65
  5. Step 5: Solve for x
    x = 9,832,587.65/2,878.90
  6. Step 6: Final answer
    x = 3,415.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.