Home / 5,405.18-8,109.28-1,707.32

Finding the Fourth Proportional to 5,405.18, 8,109.28 and 1,707.32

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Solution

The fourth proportional to 5,405.18, 8,109.28 and 1,707.32 is: 2,561.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,405.18 : 8,109.28 = 1,707.32 : x
  2. Step 2: Convert to fraction form
    5,405.18/8,109.28 = 1,707.32/x
  3. Step 3: Cross multiply
    5,405.18x = 8,109.28 × 1,707.32
  4. Step 4: Simplify right side
    5,405.18x = 13,845,135.93
  5. Step 5: Solve for x
    x = 13,845,135.93/5,405.18
  6. Step 6: Final answer
    x = 2,561.46

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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.