Home / 1,251.10-1,875.40-470.60

Finding the Fourth Proportional to 1,251.10, 1,875.40 and 470.60

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Solution

The fourth proportional to 1,251.10, 1,875.40 and 470.60 is: 705.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.10 : 1,875.40 = 470.60 : x
  2. Step 2: Convert to fraction form
    1,251.10/1,875.40 = 470.60/x
  3. Step 3: Cross multiply
    1,251.10x = 1,875.40 × 470.60
  4. Step 4: Simplify right side
    1,251.10x = 882,563.24
  5. Step 5: Solve for x
    x = 882,563.24/1,251.10
  6. Step 6: Final answer
    x = 705.43

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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.