Home / 5,416.31-8,124.47-1,312.31

Finding the Fourth Proportional to 5,416.31, 8,124.47 and 1,312.31

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Solution

The fourth proportional to 5,416.31, 8,124.47 and 1,312.31 is: 1,968.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.31 : 8,124.47 = 1,312.31 : x
  2. Step 2: Convert to fraction form
    5,416.31/8,124.47 = 1,312.31/x
  3. Step 3: Cross multiply
    5,416.31x = 8,124.47 × 1,312.31
  4. Step 4: Simplify right side
    5,416.31x = 10,661,841.90
  5. Step 5: Solve for x
    x = 10,661,841.90/5,416.31
  6. Step 6: Final answer
    x = 1,968.47

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Similar ratio
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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.