Home / 4,909.87-6,775.09-2,920.16

Finding the Fourth Proportional to 4,909.87, 6,775.09 and 2,920.16

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Solution

The fourth proportional to 4,909.87, 6,775.09 and 2,920.16 is: 4,029.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,909.87 : 6,775.09 = 2,920.16 : x
  2. Step 2: Convert to fraction form
    4,909.87/6,775.09 = 2,920.16/x
  3. Step 3: Cross multiply
    4,909.87x = 6,775.09 × 2,920.16
  4. Step 4: Simplify right side
    4,909.87x = 19,784,346.81
  5. Step 5: Solve for x
    x = 19,784,346.81/4,909.87
  6. Step 6: Final answer
    x = 4,029.51

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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.