Home / 5,688.08-8,534.32-1,990.72

Finding the Fourth Proportional to 5,688.08, 8,534.32 and 1,990.72

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Solution

The fourth proportional to 5,688.08, 8,534.32 and 1,990.72 is: 2,986.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,688.08 : 8,534.32 = 1,990.72 : x
  2. Step 2: Convert to fraction form
    5,688.08/8,534.32 = 1,990.72/x
  3. Step 3: Cross multiply
    5,688.08x = 8,534.32 × 1,990.72
  4. Step 4: Simplify right side
    5,688.08x = 16,989,441.51
  5. Step 5: Solve for x
    x = 16,989,441.51/5,688.08
  6. Step 6: Final answer
    x = 2,986.85

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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.