Home / 4,990.19-6,886.77-2,866.39

Finding the Fourth Proportional to 4,990.19, 6,886.77 and 2,866.39

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Solution

The fourth proportional to 4,990.19, 6,886.77 and 2,866.39 is: 3,955.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.19 : 6,886.77 = 2,866.39 : x
  2. Step 2: Convert to fraction form
    4,990.19/6,886.77 = 2,866.39/x
  3. Step 3: Cross multiply
    4,990.19x = 6,886.77 × 2,866.39
  4. Step 4: Simplify right side
    4,990.19x = 19,740,140.69
  5. Step 5: Solve for x
    x = 19,740,140.69/4,990.19
  6. Step 6: Final answer
    x = 3,955.79

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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.