Home / 5,127.45-7,690.77-1,840.20

Finding the Fourth Proportional to 5,127.45, 7,690.77 and 1,840.20

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Solution

The fourth proportional to 5,127.45, 7,690.77 and 1,840.20 is: 2,760.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,127.45 : 7,690.77 = 1,840.20 : x
  2. Step 2: Convert to fraction form
    5,127.45/7,690.77 = 1,840.20/x
  3. Step 3: Cross multiply
    5,127.45x = 7,690.77 × 1,840.20
  4. Step 4: Simplify right side
    5,127.45x = 14,152,554.95
  5. Step 5: Solve for x
    x = 14,152,554.95/5,127.45
  6. Step 6: Final answer
    x = 2,760.15

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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.