Home / 7,176.51-9,903.84-3,989.97

Finding the Fourth Proportional to 7,176.51, 9,903.84 and 3,989.97

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Solution

The fourth proportional to 7,176.51, 9,903.84 and 3,989.97 is: 5,506.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,176.51 : 9,903.84 = 3,989.97 : x
  2. Step 2: Convert to fraction form
    7,176.51/9,903.84 = 3,989.97/x
  3. Step 3: Cross multiply
    7,176.51x = 9,903.84 × 3,989.97
  4. Step 4: Simplify right side
    7,176.51x = 39,516,024.48
  5. Step 5: Solve for x
    x = 39,516,024.48/7,176.51
  6. Step 6: Final answer
    x = 5,506.30

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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.