Home / 2,879.36-4,298.80-2,607.20

Finding the Fourth Proportional to 2,879.36, 4,298.80 and 2,607.20

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Solution

The fourth proportional to 2,879.36, 4,298.80 and 2,607.20 is: 3,892.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,879.36 : 4,298.80 = 2,607.20 : x
  2. Step 2: Convert to fraction form
    2,879.36/4,298.80 = 2,607.20/x
  3. Step 3: Cross multiply
    2,879.36x = 4,298.80 × 2,607.20
  4. Step 4: Simplify right side
    2,879.36x = 11,207,831.36
  5. Step 5: Solve for x
    x = 11,207,831.36/2,879.36
  6. Step 6: Final answer
    x = 3,892.47

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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.