Home / 5,415.48-8,120.18-1,717.02

Finding the Fourth Proportional to 5,415.48, 8,120.18 and 1,717.02

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Solution

The fourth proportional to 5,415.48, 8,120.18 and 1,717.02 is: 2,574.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.48 : 8,120.18 = 1,717.02 : x
  2. Step 2: Convert to fraction form
    5,415.48/8,120.18 = 1,717.02/x
  3. Step 3: Cross multiply
    5,415.48x = 8,120.18 × 1,717.02
  4. Step 4: Simplify right side
    5,415.48x = 13,942,515.76
  5. Step 5: Solve for x
    x = 13,942,515.76/5,415.48
  6. Step 6: Final answer
    x = 2,574.57

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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.