Home / 5,118.46-7,677.60-1,420.27

Finding the Fourth Proportional to 5,118.46, 7,677.60 and 1,420.27

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Solution

The fourth proportional to 5,118.46, 7,677.60 and 1,420.27 is: 2,130.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,118.46 : 7,677.60 = 1,420.27 : x
  2. Step 2: Convert to fraction form
    5,118.46/7,677.60 = 1,420.27/x
  3. Step 3: Cross multiply
    5,118.46x = 7,677.60 × 1,420.27
  4. Step 4: Simplify right side
    5,118.46x = 10,904,264.95
  5. Step 5: Solve for x
    x = 10,904,264.95/5,118.46
  6. Step 6: Final answer
    x = 2,130.38

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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.