Home / 5,643.80-8,459.70-2,720.20

Finding the Fourth Proportional to 5,643.80, 8,459.70 and 2,720.20

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Solution

The fourth proportional to 5,643.80, 8,459.70 and 2,720.20 is: 4,077.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643.80 : 8,459.70 = 2,720.20 : x
  2. Step 2: Convert to fraction form
    5,643.80/8,459.70 = 2,720.20/x
  3. Step 3: Cross multiply
    5,643.80x = 8,459.70 × 2,720.20
  4. Step 4: Simplify right side
    5,643.80x = 23,012,075.94
  5. Step 5: Solve for x
    x = 23,012,075.94/5,643.80
  6. Step 6: Final answer
    x = 4,077.41

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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.