Home / 2,985.78-4,479.45-2,798.19

Finding the Fourth Proportional to 2,985.78, 4,479.45 and 2,798.19

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Solution

The fourth proportional to 2,985.78, 4,479.45 and 2,798.19 is: 4,198.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.78 : 4,479.45 = 2,798.19 : x
  2. Step 2: Convert to fraction form
    2,985.78/4,479.45 = 2,798.19/x
  3. Step 3: Cross multiply
    2,985.78x = 4,479.45 × 2,798.19
  4. Step 4: Simplify right side
    2,985.78x = 12,534,352.20
  5. Step 5: Solve for x
    x = 12,534,352.20/2,985.78
  6. Step 6: Final answer
    x = 4,198.02

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1.5x scale

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.