Home / 8,239.36-12,359.52-5,312.32

Finding the Fourth Proportional to 8,239.36, 12,359.52 and 5,312.32

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Solution

The fourth proportional to 8,239.36, 12,359.52 and 5,312.32 is: 7,968.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.36 : 12,359.52 = 5,312.32 : x
  2. Step 2: Convert to fraction form
    8,239.36/12,359.52 = 5,312.32/x
  3. Step 3: Cross multiply
    8,239.36x = 12,359.52 × 5,312.32
  4. Step 4: Simplify right side
    8,239.36x = 65,657,725.29
  5. Step 5: Solve for x
    x = 65,657,725.29/8,239.36
  6. Step 6: Final answer
    x = 7,968.79

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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.