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Finding the Fourth Proportional to 2,625.90, 3,623.72 and 1,430.80

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Solution

The fourth proportional to 2,625.90, 3,623.72 and 1,430.80 is: 1,974.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,625.90 : 3,623.72 = 1,430.80 : x
  2. Step 2: Convert to fraction form
    2,625.90/3,623.72 = 1,430.80/x
  3. Step 3: Cross multiply
    2,625.90x = 3,623.72 × 1,430.80
  4. Step 4: Simplify right side
    2,625.90x = 5,184,818.58
  5. Step 5: Solve for x
    x = 5,184,818.58/2,625.90
  6. Step 6: Final answer
    x = 1,974.49

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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.