Home / 4,921.34-7,381.80-1,223.51

Finding the Fourth Proportional to 4,921.34, 7,381.80 and 1,223.51

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Solution

The fourth proportional to 4,921.34, 7,381.80 and 1,223.51 is: 1,835.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,921.34 : 7,381.80 = 1,223.51 : x
  2. Step 2: Convert to fraction form
    4,921.34/7,381.80 = 1,223.51/x
  3. Step 3: Cross multiply
    4,921.34x = 7,381.80 × 1,223.51
  4. Step 4: Simplify right side
    4,921.34x = 9,031,669.21
  5. Step 5: Solve for x
    x = 9,031,669.21/4,921.34
  6. Step 6: Final answer
    x = 1,835.21

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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.