Home / 7,029.72-9,701.64-3,886.20

Finding the Fourth Proportional to 7,029.72, 9,701.64 and 3,886.20

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Solution

The fourth proportional to 7,029.72, 9,701.64 and 3,886.20 is: 5,363.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,029.72 : 9,701.64 = 3,886.20 : x
  2. Step 2: Convert to fraction form
    7,029.72/9,701.64 = 3,886.20/x
  3. Step 3: Cross multiply
    7,029.72x = 9,701.64 × 3,886.20
  4. Step 4: Simplify right side
    7,029.72x = 37,702,513.37
  5. Step 5: Solve for x
    x = 37,702,513.37/7,029.72
  6. Step 6: Final answer
    x = 5,363.30

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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.