Home / 1,394.34-2,088.54-1,047.15

Finding the Fourth Proportional to 1,394.34, 2,088.54 and 1,047.15

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Solution

The fourth proportional to 1,394.34, 2,088.54 and 1,047.15 is: 1,568.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.34 : 2,088.54 = 1,047.15 : x
  2. Step 2: Convert to fraction form
    1,394.34/2,088.54 = 1,047.15/x
  3. Step 3: Cross multiply
    1,394.34x = 2,088.54 × 1,047.15
  4. Step 4: Simplify right side
    1,394.34x = 2,187,014.66
  5. Step 5: Solve for x
    x = 2,187,014.66/1,394.34
  6. Step 6: Final answer
    x = 1,568.49

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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.