Home / 5,118.24-7,678.40-1,831.84

Finding the Fourth Proportional to 5,118.24, 7,678.40 and 1,831.84

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Solution

The fourth proportional to 5,118.24, 7,678.40 and 1,831.84 is: 2,748.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.24 : 7,678.40 = 1,831.84 : x
  2. Step 2: Convert to fraction form
    5,118.24/7,678.40 = 1,831.84/x
  3. Step 3: Cross multiply
    5,118.24x = 7,678.40 × 1,831.84
  4. Step 4: Simplify right side
    5,118.24x = 14,065,600.26
  5. Step 5: Solve for x
    x = 14,065,600.26/5,118.24
  6. Step 6: Final answer
    x = 2,748.13

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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.