Home / 10,278.04-15,415.32-2,880.80

Finding the Fourth Proportional to 10,278.04, 15,415.32 and 2,880.80

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Solution

The fourth proportional to 10,278.04, 15,415.32 and 2,880.80 is: 4,320.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.04 : 15,415.32 = 2,880.80 : x
  2. Step 2: Convert to fraction form
    10,278.04/15,415.32 = 2,880.80/x
  3. Step 3: Cross multiply
    10,278.04x = 15,415.32 × 2,880.80
  4. Step 4: Simplify right side
    10,278.04x = 44,408,369.58
  5. Step 5: Solve for x
    x = 44,408,369.58/10,278.04
  6. Step 6: Final answer
    x = 4,320.71

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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.