Home / 1,688.50-2,534.06-1,172.13

Finding the Fourth Proportional to 1,688.50, 2,534.06 and 1,172.13

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Solution

The fourth proportional to 1,688.50, 2,534.06 and 1,172.13 is: 1,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.50 : 2,534.06 = 1,172.13 : x
  2. Step 2: Convert to fraction form
    1,688.50/2,534.06 = 1,172.13/x
  3. Step 3: Cross multiply
    1,688.50x = 2,534.06 × 1,172.13
  4. Step 4: Simplify right side
    1,688.50x = 2,970,247.75
  5. Step 5: Solve for x
    x = 2,970,247.75/1,688.50
  6. Step 6: Final answer
    x = 1,759.10

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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.