Home / 4,909.59-6,774.78-2,920.64

Finding the Fourth Proportional to 4,909.59, 6,774.78 and 2,920.64

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Solution

The fourth proportional to 4,909.59, 6,774.78 and 2,920.64 is: 4,030.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,909.59 : 6,774.78 = 2,920.64 : x
  2. Step 2: Convert to fraction form
    4,909.59/6,774.78 = 2,920.64/x
  3. Step 3: Cross multiply
    4,909.59x = 6,774.78 × 2,920.64
  4. Step 4: Simplify right side
    4,909.59x = 19,786,659.59
  5. Step 5: Solve for x
    x = 19,786,659.59/4,909.59
  6. Step 6: Final answer
    x = 4,030.21

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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.