Home / 1,285.96-1,929.53-700.09

Finding the Fourth Proportional to 1,285.96, 1,929.53 and 700.09

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Solution

The fourth proportional to 1,285.96, 1,929.53 and 700.09 is: 1,050.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285.96 : 1,929.53 = 700.09 : x
  2. Step 2: Convert to fraction form
    1,285.96/1,929.53 = 700.09/x
  3. Step 3: Cross multiply
    1,285.96x = 1,929.53 × 700.09
  4. Step 4: Simplify right side
    1,285.96x = 1,350,844.66
  5. Step 5: Solve for x
    x = 1,350,844.66/1,285.96
  6. Step 6: Final answer
    x = 1,050.46

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1.5x scale

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.