Home / 2,778.36-4,143.12-2,360.40

Finding the Fourth Proportional to 2,778.36, 4,143.12 and 2,360.40

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Solution

The fourth proportional to 2,778.36, 4,143.12 and 2,360.40 is: 3,519.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.36 : 4,143.12 = 2,360.40 : x
  2. Step 2: Convert to fraction form
    2,778.36/4,143.12 = 2,360.40/x
  3. Step 3: Cross multiply
    2,778.36x = 4,143.12 × 2,360.40
  4. Step 4: Simplify right side
    2,778.36x = 9,779,420.45
  5. Step 5: Solve for x
    x = 9,779,420.45/2,778.36
  6. Step 6: Final answer
    x = 3,519.85

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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.