Home / 4,341.80-6,511.10-1,420.20

Finding the Fourth Proportional to 4,341.80, 6,511.10 and 1,420.20

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Solution

The fourth proportional to 4,341.80, 6,511.10 and 1,420.20 is: 2,129.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,341.80 : 6,511.10 = 1,420.20 : x
  2. Step 2: Convert to fraction form
    4,341.80/6,511.10 = 1,420.20/x
  3. Step 3: Cross multiply
    4,341.80x = 6,511.10 × 1,420.20
  4. Step 4: Simplify right side
    4,341.80x = 9,247,064.22
  5. Step 5: Solve for x
    x = 9,247,064.22/4,341.80
  6. Step 6: Final answer
    x = 2,129.78

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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.