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Finding the Fourth Proportional to 1,888.79, 2,607.21 and 1,622.15

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Solution

The fourth proportional to 1,888.79, 2,607.21 and 1,622.15 is: 2,239.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,888.79 : 2,607.21 = 1,622.15 : x
  2. Step 2: Convert to fraction form
    1,888.79/2,607.21 = 1,622.15/x
  3. Step 3: Cross multiply
    1,888.79x = 2,607.21 × 1,622.15
  4. Step 4: Simplify right side
    1,888.79x = 4,229,272.67
  5. Step 5: Solve for x
    x = 4,229,272.67/1,888.79
  6. Step 6: Final answer
    x = 2,239.15

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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.