Home / 1,127.10-1,688.25-541.23

Finding the Fourth Proportional to 1,127.10, 1,688.25 and 541.23

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Solution

The fourth proportional to 1,127.10, 1,688.25 and 541.23 is: 810.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.10 : 1,688.25 = 541.23 : x
  2. Step 2: Convert to fraction form
    1,127.10/1,688.25 = 541.23/x
  3. Step 3: Cross multiply
    1,127.10x = 1,688.25 × 541.23
  4. Step 4: Simplify right side
    1,127.10x = 913,728.84
  5. Step 5: Solve for x
    x = 913,728.84/1,127.10
  6. Step 6: Final answer
    x = 810.69

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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.