Home / 5,659.12-7,807.68-3,420.13

Finding the Fourth Proportional to 5,659.12, 7,807.68 and 3,420.13

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Solution

The fourth proportional to 5,659.12, 7,807.68 and 3,420.13 is: 4,718.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,659.12 : 7,807.68 = 3,420.13 : x
  2. Step 2: Convert to fraction form
    5,659.12/7,807.68 = 3,420.13/x
  3. Step 3: Cross multiply
    5,659.12x = 7,807.68 × 3,420.13
  4. Step 4: Simplify right side
    5,659.12x = 26,703,280.60
  5. Step 5: Solve for x
    x = 26,703,280.60/5,659.12
  6. Step 6: Final answer
    x = 4,718.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.