Home / 1,251.10-1,872.60-975.70

Finding the Fourth Proportional to 1,251.10, 1,872.60 and 975.70

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Solution

The fourth proportional to 1,251.10, 1,872.60 and 975.70 is: 1,460.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.10 : 1,872.60 = 975.70 : x
  2. Step 2: Convert to fraction form
    1,251.10/1,872.60 = 975.70/x
  3. Step 3: Cross multiply
    1,251.10x = 1,872.60 × 975.70
  4. Step 4: Simplify right side
    1,251.10x = 1,827,095.82
  5. Step 5: Solve for x
    x = 1,827,095.82/1,251.10
  6. Step 6: Final answer
    x = 1,460.39

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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.