Home / 5,208.16-7,812.15-1,312.48

Finding the Fourth Proportional to 5,208.16, 7,812.15 and 1,312.48

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Solution

The fourth proportional to 5,208.16, 7,812.15 and 1,312.48 is: 1,968.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.16 : 7,812.15 = 1,312.48 : x
  2. Step 2: Convert to fraction form
    5,208.16/7,812.15 = 1,312.48/x
  3. Step 3: Cross multiply
    5,208.16x = 7,812.15 × 1,312.48
  4. Step 4: Simplify right side
    5,208.16x = 10,253,290.63
  5. Step 5: Solve for x
    x = 10,253,290.63/5,208.16
  6. Step 6: Final answer
    x = 1,968.70

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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.