Home / 2,347.68-3,239.81-1,285.55

Finding the Fourth Proportional to 2,347.68, 3,239.81 and 1,285.55

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Solution

The fourth proportional to 2,347.68, 3,239.81 and 1,285.55 is: 1,774.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,347.68 : 3,239.81 = 1,285.55 : x
  2. Step 2: Convert to fraction form
    2,347.68/3,239.81 = 1,285.55/x
  3. Step 3: Cross multiply
    2,347.68x = 3,239.81 × 1,285.55
  4. Step 4: Simplify right side
    2,347.68x = 4,164,937.75
  5. Step 5: Solve for x
    x = 4,164,937.75/2,347.68
  6. Step 6: Final answer
    x = 1,774.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.