Home / 5,412.72-8,120.28-1,716.08

Finding the Fourth Proportional to 5,412.72, 8,120.28 and 1,716.08

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Solution

The fourth proportional to 5,412.72, 8,120.28 and 1,716.08 is: 2,574.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.72 : 8,120.28 = 1,716.08 : x
  2. Step 2: Convert to fraction form
    5,412.72/8,120.28 = 1,716.08/x
  3. Step 3: Cross multiply
    5,412.72x = 8,120.28 × 1,716.08
  4. Step 4: Simplify right side
    5,412.72x = 13,935,050.10
  5. Step 5: Solve for x
    x = 13,935,050.10/5,412.72
  6. Step 6: Final answer
    x = 2,574.50

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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.