Home / 5,208.42-7,812.61-1,312.83

Finding the Fourth Proportional to 5,208.42, 7,812.61 and 1,312.83

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Solution

The fourth proportional to 5,208.42, 7,812.61 and 1,312.83 is: 1,969.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.42 : 7,812.61 = 1,312.83 : x
  2. Step 2: Convert to fraction form
    5,208.42/7,812.61 = 1,312.83/x
  3. Step 3: Cross multiply
    5,208.42x = 7,812.61 × 1,312.83
  4. Step 4: Simplify right side
    5,208.42x = 10,256,628.79
  5. Step 5: Solve for x
    x = 10,256,628.79/5,208.42
  6. Step 6: Final answer
    x = 1,969.24

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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.