Home / 7,081.08-10,620.72-1,886.64

Finding the Fourth Proportional to 7,081.08, 10,620.72 and 1,886.64

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Solution

The fourth proportional to 7,081.08, 10,620.72 and 1,886.64 is: 2,829.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.08 : 10,620.72 = 1,886.64 : x
  2. Step 2: Convert to fraction form
    7,081.08/10,620.72 = 1,886.64/x
  3. Step 3: Cross multiply
    7,081.08x = 10,620.72 × 1,886.64
  4. Step 4: Simplify right side
    7,081.08x = 20,037,475.18
  5. Step 5: Solve for x
    x = 20,037,475.18/7,081.08
  6. Step 6: Final answer
    x = 2,829.72

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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.