Home / 7,928.72-11,903.36-5,312.96

Finding the Fourth Proportional to 7,928.72, 11,903.36 and 5,312.96

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Solution

The fourth proportional to 7,928.72, 11,903.36 and 5,312.96 is: 7,976.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.72 : 11,903.36 = 5,312.96 : x
  2. Step 2: Convert to fraction form
    7,928.72/11,903.36 = 5,312.96/x
  3. Step 3: Cross multiply
    7,928.72x = 11,903.36 × 5,312.96
  4. Step 4: Simplify right side
    7,928.72x = 63,242,034.10
  5. Step 5: Solve for x
    x = 63,242,034.10/7,928.72
  6. Step 6: Final answer
    x = 7,976.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.