Home / 1,681.02-2,521.41-511.05

Finding the Fourth Proportional to 1,681.02, 2,521.41 and 511.05

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Solution

The fourth proportional to 1,681.02, 2,521.41 and 511.05 is: 766.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.02 : 2,521.41 = 511.05 : x
  2. Step 2: Convert to fraction form
    1,681.02/2,521.41 = 511.05/x
  3. Step 3: Cross multiply
    1,681.02x = 2,521.41 × 511.05
  4. Step 4: Simplify right side
    1,681.02x = 1,288,566.58
  5. Step 5: Solve for x
    x = 1,288,566.58/1,681.02
  6. Step 6: Final answer
    x = 766.54

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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.