Home / 3,910.02-5,865.57-1,312.62

Finding the Fourth Proportional to 3,910.02, 5,865.57 and 1,312.62

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Solution

The fourth proportional to 3,910.02, 5,865.57 and 1,312.62 is: 1,969.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.02 : 5,865.57 = 1,312.62 : x
  2. Step 2: Convert to fraction form
    3,910.02/5,865.57 = 1,312.62/x
  3. Step 3: Cross multiply
    3,910.02x = 5,865.57 × 1,312.62
  4. Step 4: Simplify right side
    3,910.02x = 7,699,264.49
  5. Step 5: Solve for x
    x = 7,699,264.49/3,910.02
  6. Step 6: Final answer
    x = 1,969.11

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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.