Home / 3,647.12-5,031.84-2,155.08

Finding the Fourth Proportional to 3,647.12, 5,031.84 and 2,155.08

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Solution

The fourth proportional to 3,647.12, 5,031.84 and 2,155.08 is: 2,973.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,647.12 : 5,031.84 = 2,155.08 : x
  2. Step 2: Convert to fraction form
    3,647.12/5,031.84 = 2,155.08/x
  3. Step 3: Cross multiply
    3,647.12x = 5,031.84 × 2,155.08
  4. Step 4: Simplify right side
    3,647.12x = 10,844,017.75
  5. Step 5: Solve for x
    x = 10,844,017.75/3,647.12
  6. Step 6: Final answer
    x = 2,973.31

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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.