Home / 1,257.04-1,886.10-607.78

Finding the Fourth Proportional to 1,257.04, 1,886.10 and 607.78

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Solution

The fourth proportional to 1,257.04, 1,886.10 and 607.78 is: 911.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,257.04 : 1,886.10 = 607.78 : x
  2. Step 2: Convert to fraction form
    1,257.04/1,886.10 = 607.78/x
  3. Step 3: Cross multiply
    1,257.04x = 1,886.10 × 607.78
  4. Step 4: Simplify right side
    1,257.04x = 1,146,333.86
  5. Step 5: Solve for x
    x = 1,146,333.86/1,257.04
  6. Step 6: Final answer
    x = 911.93

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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.