Home / 1,622.34-2,428.91-1,261.35

Finding the Fourth Proportional to 1,622.34, 2,428.91 and 1,261.35

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Solution

The fourth proportional to 1,622.34, 2,428.91 and 1,261.35 is: 1,888.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.34 : 2,428.91 = 1,261.35 : x
  2. Step 2: Convert to fraction form
    1,622.34/2,428.91 = 1,261.35/x
  3. Step 3: Cross multiply
    1,622.34x = 2,428.91 × 1,261.35
  4. Step 4: Simplify right side
    1,622.34x = 3,063,705.63
  5. Step 5: Solve for x
    x = 3,063,705.63/1,622.34
  6. Step 6: Final answer
    x = 1,888.45

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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.