Home / 3,555.47-4,890.14-3,112.60

Finding the Fourth Proportional to 3,555.47, 4,890.14 and 3,112.60

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Solution

The fourth proportional to 3,555.47, 4,890.14 and 3,112.60 is: 4,281.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555.47 : 4,890.14 = 3,112.60 : x
  2. Step 2: Convert to fraction form
    3,555.47/4,890.14 = 3,112.60/x
  3. Step 3: Cross multiply
    3,555.47x = 4,890.14 × 3,112.60
  4. Step 4: Simplify right side
    3,555.47x = 15,221,063.66
  5. Step 5: Solve for x
    x = 15,221,063.66/3,555.47
  6. Step 6: Final answer
    x = 4,281.03

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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.