Home / 1,210.02-1,815.56-516.76

Finding the Fourth Proportional to 1,210.02, 1,815.56 and 516.76

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Solution

The fourth proportional to 1,210.02, 1,815.56 and 516.76 is: 775.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.02 : 1,815.56 = 516.76 : x
  2. Step 2: Convert to fraction form
    1,210.02/1,815.56 = 516.76/x
  3. Step 3: Cross multiply
    1,210.02x = 1,815.56 × 516.76
  4. Step 4: Simplify right side
    1,210.02x = 938,208.79
  5. Step 5: Solve for x
    x = 938,208.79/1,210.02
  6. Step 6: Final answer
    x = 775.37

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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.