Home / 7,928.63-10,939.01-5,276.46

Finding the Fourth Proportional to 7,928.63, 10,939.01 and 5,276.46

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Solution

The fourth proportional to 7,928.63, 10,939.01 and 5,276.46 is: 7,279.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.63 : 10,939.01 = 5,276.46 : x
  2. Step 2: Convert to fraction form
    7,928.63/10,939.01 = 5,276.46/x
  3. Step 3: Cross multiply
    7,928.63x = 10,939.01 × 5,276.46
  4. Step 4: Simplify right side
    7,928.63x = 57,719,222.32
  5. Step 5: Solve for x
    x = 57,719,222.32/7,928.63
  6. Step 6: Final answer
    x = 7,279.85

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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.