Home / 5,208.13-7,812.36-1,312.54

Finding the Fourth Proportional to 5,208.13, 7,812.36 and 1,312.54

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Solution

The fourth proportional to 5,208.13, 7,812.36 and 1,312.54 is: 1,968.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.13 : 7,812.36 = 1,312.54 : x
  2. Step 2: Convert to fraction form
    5,208.13/7,812.36 = 1,312.54/x
  3. Step 3: Cross multiply
    5,208.13x = 7,812.36 × 1,312.54
  4. Step 4: Simplify right side
    5,208.13x = 10,254,034.99
  5. Step 5: Solve for x
    x = 10,254,034.99/5,208.13
  6. Step 6: Final answer
    x = 1,968.85

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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.