Home / 3,931.56-5,900.99-1,985.13

Finding the Fourth Proportional to 3,931.56, 5,900.99 and 1,985.13

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Solution

The fourth proportional to 3,931.56, 5,900.99 and 1,985.13 is: 2,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.56 : 5,900.99 = 1,985.13 : x
  2. Step 2: Convert to fraction form
    3,931.56/5,900.99 = 1,985.13/x
  3. Step 3: Cross multiply
    3,931.56x = 5,900.99 × 1,985.13
  4. Step 4: Simplify right side
    3,931.56x = 11,714,222.35
  5. Step 5: Solve for x
    x = 11,714,222.35/3,931.56
  6. Step 6: Final answer
    x = 2,979.54

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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.