Home / 3,670.36-5,061.28-2,831.20

Finding the Fourth Proportional to 3,670.36, 5,061.28 and 2,831.20

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Solution

The fourth proportional to 3,670.36, 5,061.28 and 2,831.20 is: 3,904.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,670.36 : 5,061.28 = 2,831.20 : x
  2. Step 2: Convert to fraction form
    3,670.36/5,061.28 = 2,831.20/x
  3. Step 3: Cross multiply
    3,670.36x = 5,061.28 × 2,831.20
  4. Step 4: Simplify right side
    3,670.36x = 14,329,495.94
  5. Step 5: Solve for x
    x = 14,329,495.94/3,670.36
  6. Step 6: Final answer
    x = 3,904.11

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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.