Home / 4,648.30-6,415.90-2,878.90

Finding the Fourth Proportional to 4,648.30, 6,415.90 and 2,878.90

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Solution

The fourth proportional to 4,648.30, 6,415.90 and 2,878.90 is: 3,973.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,648.30 : 6,415.90 = 2,878.90 : x
  2. Step 2: Convert to fraction form
    4,648.30/6,415.90 = 2,878.90/x
  3. Step 3: Cross multiply
    4,648.30x = 6,415.90 × 2,878.90
  4. Step 4: Simplify right side
    4,648.30x = 18,470,734.51
  5. Step 5: Solve for x
    x = 18,470,734.51/4,648.30
  6. Step 6: Final answer
    x = 3,973.65

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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.