Home / 4,051.71-6,078.20-1,420.02

Finding the Fourth Proportional to 4,051.71, 6,078.20 and 1,420.02

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Solution

The fourth proportional to 4,051.71, 6,078.20 and 1,420.02 is: 2,130.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,051.71 : 6,078.20 = 1,420.02 : x
  2. Step 2: Convert to fraction form
    4,051.71/6,078.20 = 1,420.02/x
  3. Step 3: Cross multiply
    4,051.71x = 6,078.20 × 1,420.02
  4. Step 4: Simplify right side
    4,051.71x = 8,631,158.46
  5. Step 5: Solve for x
    x = 8,631,158.46/4,051.71
  6. Step 6: Final answer
    x = 2,130.25

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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.