Home / 5,160.81-7,122.03-2,803.05

Finding the Fourth Proportional to 5,160.81, 7,122.03 and 2,803.05

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Solution

The fourth proportional to 5,160.81, 7,122.03 and 2,803.05 is: 3,868.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.81 : 7,122.03 = 2,803.05 : x
  2. Step 2: Convert to fraction form
    5,160.81/7,122.03 = 2,803.05/x
  3. Step 3: Cross multiply
    5,160.81x = 7,122.03 × 2,803.05
  4. Step 4: Simplify right side
    5,160.81x = 19,963,406.19
  5. Step 5: Solve for x
    x = 19,963,406.19/5,160.81
  6. Step 6: Final answer
    x = 3,868.27

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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.