Home / 2,880.30-4,307.13-2,187.12

Finding the Fourth Proportional to 2,880.30, 4,307.13 and 2,187.12

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Solution

The fourth proportional to 2,880.30, 4,307.13 and 2,187.12 is: 3,270.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.30 : 4,307.13 = 2,187.12 : x
  2. Step 2: Convert to fraction form
    2,880.30/4,307.13 = 2,187.12/x
  3. Step 3: Cross multiply
    2,880.30x = 4,307.13 × 2,187.12
  4. Step 4: Simplify right side
    2,880.30x = 9,420,210.17
  5. Step 5: Solve for x
    x = 9,420,210.17/2,880.30
  6. Step 6: Final answer
    x = 3,270.57

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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.