Home / 4,775.81-7,154.60-3,129.08

Finding the Fourth Proportional to 4,775.81, 7,154.60 and 3,129.08

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Solution

The fourth proportional to 4,775.81, 7,154.60 and 3,129.08 is: 4,687.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,775.81 : 7,154.60 = 3,129.08 : x
  2. Step 2: Convert to fraction form
    4,775.81/7,154.60 = 3,129.08/x
  3. Step 3: Cross multiply
    4,775.81x = 7,154.60 × 3,129.08
  4. Step 4: Simplify right side
    4,775.81x = 22,387,264.35
  5. Step 5: Solve for x
    x = 22,387,264.35/4,775.81
  6. Step 6: Final answer
    x = 4,687.64

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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.