Home / 5,615.45-8,420.19-1,718.81

Finding the Fourth Proportional to 5,615.45, 8,420.19 and 1,718.81

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Solution

The fourth proportional to 5,615.45, 8,420.19 and 1,718.81 is: 2,577.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,615.45 : 8,420.19 = 1,718.81 : x
  2. Step 2: Convert to fraction form
    5,615.45/8,420.19 = 1,718.81/x
  3. Step 3: Cross multiply
    5,615.45x = 8,420.19 × 1,718.81
  4. Step 4: Simplify right side
    5,615.45x = 14,472,664.67
  5. Step 5: Solve for x
    x = 14,472,664.67/5,615.45
  6. Step 6: Final answer
    x = 2,577.30

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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.