Home / 5,161.79-7,123.12-2,803.93

Finding the Fourth Proportional to 5,161.79, 7,123.12 and 2,803.93

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Solution

The fourth proportional to 5,161.79, 7,123.12 and 2,803.93 is: 3,869.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.79 : 7,123.12 = 2,803.93 : x
  2. Step 2: Convert to fraction form
    5,161.79/7,123.12 = 2,803.93/x
  3. Step 3: Cross multiply
    5,161.79x = 7,123.12 × 2,803.93
  4. Step 4: Simplify right side
    5,161.79x = 19,972,705.04
  5. Step 5: Solve for x
    x = 19,972,705.04/5,161.79
  6. Step 6: Final answer
    x = 3,869.34

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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.