Home / 4,085.81-5,638.40-2,317.40

Finding the Fourth Proportional to 4,085.81, 5,638.40 and 2,317.40

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Solution

The fourth proportional to 4,085.81, 5,638.40 and 2,317.40 is: 3,198.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,085.81 : 5,638.40 = 2,317.40 : x
  2. Step 2: Convert to fraction form
    4,085.81/5,638.40 = 2,317.40/x
  3. Step 3: Cross multiply
    4,085.81x = 5,638.40 × 2,317.40
  4. Step 4: Simplify right side
    4,085.81x = 13,066,433.95
  5. Step 5: Solve for x
    x = 13,066,433.95/4,085.81
  6. Step 6: Final answer
    x = 3,198.00

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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.