Home / 5,134.63-7,085.80-2,776.78

Finding the Fourth Proportional to 5,134.63, 7,085.80 and 2,776.78

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Solution

The fourth proportional to 5,134.63, 7,085.80 and 2,776.78 is: 3,831.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,134.63 : 7,085.80 = 2,776.78 : x
  2. Step 2: Convert to fraction form
    5,134.63/7,085.80 = 2,776.78/x
  3. Step 3: Cross multiply
    5,134.63x = 7,085.80 × 2,776.78
  4. Step 4: Simplify right side
    5,134.63x = 19,675,707.72
  5. Step 5: Solve for x
    x = 19,675,707.72/5,134.63
  6. Step 6: Final answer
    x = 3,831.96

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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.