Home / 4,689.77-7,031.07-2,840.38

Finding the Fourth Proportional to 4,689.77, 7,031.07 and 2,840.38

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Solution

The fourth proportional to 4,689.77, 7,031.07 and 2,840.38 is: 4,258.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.77 : 7,031.07 = 2,840.38 : x
  2. Step 2: Convert to fraction form
    4,689.77/7,031.07 = 2,840.38/x
  3. Step 3: Cross multiply
    4,689.77x = 7,031.07 × 2,840.38
  4. Step 4: Simplify right side
    4,689.77x = 19,970,932.58
  5. Step 5: Solve for x
    x = 19,970,932.58/4,689.77
  6. Step 6: Final answer
    x = 4,258.41

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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.