Home / 4,869.14-6,720.79-2,880.39

Finding the Fourth Proportional to 4,869.14, 6,720.79 and 2,880.39

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Solution

The fourth proportional to 4,869.14, 6,720.79 and 2,880.39 is: 3,975.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,869.14 : 6,720.79 = 2,880.39 : x
  2. Step 2: Convert to fraction form
    4,869.14/6,720.79 = 2,880.39/x
  3. Step 3: Cross multiply
    4,869.14x = 6,720.79 × 2,880.39
  4. Step 4: Simplify right side
    4,869.14x = 19,358,471.11
  5. Step 5: Solve for x
    x = 19,358,471.11/4,869.14
  6. Step 6: Final answer
    x = 3,975.75

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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.