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Finding the Fourth Proportional to 5,159.50, 7,739.74 and 1,461.84

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Solution

The fourth proportional to 5,159.50, 7,739.74 and 1,461.84 is: 2,192.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.50 : 7,739.74 = 1,461.84 : x
  2. Step 2: Convert to fraction form
    5,159.50/7,739.74 = 1,461.84/x
  3. Step 3: Cross multiply
    5,159.50x = 7,739.74 × 1,461.84
  4. Step 4: Simplify right side
    5,159.50x = 11,314,261.52
  5. Step 5: Solve for x
    x = 11,314,261.52/5,159.50
  6. Step 6: Final answer
    x = 2,192.90

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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.