Home / 4,428.39-6,640.28-1,307.99

Finding the Fourth Proportional to 4,428.39, 6,640.28 and 1,307.99

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Solution

The fourth proportional to 4,428.39, 6,640.28 and 1,307.99 is: 1,961.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,428.39 : 6,640.28 = 1,307.99 : x
  2. Step 2: Convert to fraction form
    4,428.39/6,640.28 = 1,307.99/x
  3. Step 3: Cross multiply
    4,428.39x = 6,640.28 × 1,307.99
  4. Step 4: Simplify right side
    4,428.39x = 8,685,380.10
  5. Step 5: Solve for x
    x = 8,685,380.10/4,428.39
  6. Step 6: Final answer
    x = 1,961.30

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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.