Home / 2,309.16-3,461.46-921.66

Finding the Fourth Proportional to 2,309.16, 3,461.46 and 921.66

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Solution

The fourth proportional to 2,309.16, 3,461.46 and 921.66 is: 1,381.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309.16 : 3,461.46 = 921.66 : x
  2. Step 2: Convert to fraction form
    2,309.16/3,461.46 = 921.66/x
  3. Step 3: Cross multiply
    2,309.16x = 3,461.46 × 921.66
  4. Step 4: Simplify right side
    2,309.16x = 3,190,289.22
  5. Step 5: Solve for x
    x = 3,190,289.22/2,309.16
  6. Step 6: Final answer
    x = 1,381.58

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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.