Home / 1,307.47-1,961.51-441.78

Finding the Fourth Proportional to 1,307.47, 1,961.51 and 441.78

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Solution

The fourth proportional to 1,307.47, 1,961.51 and 441.78 is: 662.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,307.47 : 1,961.51 = 441.78 : x
  2. Step 2: Convert to fraction form
    1,307.47/1,961.51 = 441.78/x
  3. Step 3: Cross multiply
    1,307.47x = 1,961.51 × 441.78
  4. Step 4: Simplify right side
    1,307.47x = 866,557.24
  5. Step 5: Solve for x
    x = 866,557.24/1,307.47
  6. Step 6: Final answer
    x = 662.77

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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.