Home / 4,875.12-6,727.68-2,779.20

Finding the Fourth Proportional to 4,875.12, 6,727.68 and 2,779.20

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Solution

The fourth proportional to 4,875.12, 6,727.68 and 2,779.20 is: 3,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,875.12 : 6,727.68 = 2,779.20 : x
  2. Step 2: Convert to fraction form
    4,875.12/6,727.68 = 2,779.20/x
  3. Step 3: Cross multiply
    4,875.12x = 6,727.68 × 2,779.20
  4. Step 4: Simplify right side
    4,875.12x = 18,697,568.26
  5. Step 5: Solve for x
    x = 18,697,568.26/4,875.12
  6. Step 6: Final answer
    x = 3,835.30

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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.