Home / 2,312.09-3,190.76-1,317.52

Finding the Fourth Proportional to 2,312.09, 3,190.76 and 1,317.52

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Solution

The fourth proportional to 2,312.09, 3,190.76 and 1,317.52 is: 1,818.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,312.09 : 3,190.76 = 1,317.52 : x
  2. Step 2: Convert to fraction form
    2,312.09/3,190.76 = 1,317.52/x
  3. Step 3: Cross multiply
    2,312.09x = 3,190.76 × 1,317.52
  4. Step 4: Simplify right side
    2,312.09x = 4,203,885.43
  5. Step 5: Solve for x
    x = 4,203,885.43/2,312.09
  6. Step 6: Final answer
    x = 1,818.22

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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.