Home / 2,887.41-3,985.29-1,709.28

Finding the Fourth Proportional to 2,887.41, 3,985.29 and 1,709.28

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Solution

The fourth proportional to 2,887.41, 3,985.29 and 1,709.28 is: 2,359.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,887.41 : 3,985.29 = 1,709.28 : x
  2. Step 2: Convert to fraction form
    2,887.41/3,985.29 = 1,709.28/x
  3. Step 3: Cross multiply
    2,887.41x = 3,985.29 × 1,709.28
  4. Step 4: Simplify right side
    2,887.41x = 6,811,976.49
  5. Step 5: Solve for x
    x = 6,811,976.49/2,887.41
  6. Step 6: Final answer
    x = 2,359.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.