Home / 2,038.80-3,055.90-1,420.63

Finding the Fourth Proportional to 2,038.80, 3,055.90 and 1,420.63

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Solution

The fourth proportional to 2,038.80, 3,055.90 and 1,420.63 is: 2,129.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,038.80 : 3,055.90 = 1,420.63 : x
  2. Step 2: Convert to fraction form
    2,038.80/3,055.90 = 1,420.63/x
  3. Step 3: Cross multiply
    2,038.80x = 3,055.90 × 1,420.63
  4. Step 4: Simplify right side
    2,038.80x = 4,341,292.03
  5. Step 5: Solve for x
    x = 4,341,292.03/2,038.80
  6. Step 6: Final answer
    x = 2,129.34

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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.