Home / 3,607.12-4,977.86-2,115.08

Finding the Fourth Proportional to 3,607.12, 4,977.86 and 2,115.08

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Solution

The fourth proportional to 3,607.12, 4,977.86 and 2,115.08 is: 2,918.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,607.12 : 4,977.86 = 2,115.08 : x
  2. Step 2: Convert to fraction form
    3,607.12/4,977.86 = 2,115.08/x
  3. Step 3: Cross multiply
    3,607.12x = 4,977.86 × 2,115.08
  4. Step 4: Simplify right side
    3,607.12x = 10,528,572.13
  5. Step 5: Solve for x
    x = 10,528,572.13/3,607.12
  6. Step 6: Final answer
    x = 2,918.83

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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.