Home / 3,501.40-4,831.68-2,009.20

Finding the Fourth Proportional to 3,501.40, 4,831.68 and 2,009.20

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Solution

The fourth proportional to 3,501.40, 4,831.68 and 2,009.20 is: 2,772.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,501.40 : 4,831.68 = 2,009.20 : x
  2. Step 2: Convert to fraction form
    3,501.40/4,831.68 = 2,009.20/x
  3. Step 3: Cross multiply
    3,501.40x = 4,831.68 × 2,009.20
  4. Step 4: Simplify right side
    3,501.40x = 9,707,811.46
  5. Step 5: Solve for x
    x = 9,707,811.46/3,501.40
  6. Step 6: Final answer
    x = 2,772.55

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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.