Home / 3,185.18-4,395.76-1,858.40

Finding the Fourth Proportional to 3,185.18, 4,395.76 and 1,858.40

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Solution

The fourth proportional to 3,185.18, 4,395.76 and 1,858.40 is: 2,564.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.18 : 4,395.76 = 1,858.40 : x
  2. Step 2: Convert to fraction form
    3,185.18/4,395.76 = 1,858.40/x
  3. Step 3: Cross multiply
    3,185.18x = 4,395.76 × 1,858.40
  4. Step 4: Simplify right side
    3,185.18x = 8,169,080.38
  5. Step 5: Solve for x
    x = 8,169,080.38/3,185.18
  6. Step 6: Final answer
    x = 2,564.72

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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.