Home / 7,955.51-10,975-5,121.87

Finding the Fourth Proportional to 7,955.51, 10,975 and 5,121.87

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Solution

The fourth proportional to 7,955.51, 10,975 and 5,121.87 is: 7,065.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,955.51 : 10,975 = 5,121.87 : x
  2. Step 2: Convert to fraction form
    7,955.51/10,975 = 5,121.87/x
  3. Step 3: Cross multiply
    7,955.51x = 10,975 × 5,121.87
  4. Step 4: Simplify right side
    7,955.51x = 56,212,523.25
  5. Step 5: Solve for x
    x = 56,212,523.25/7,955.51
  6. Step 6: Final answer
    x = 7,065.86

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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.