Home / 9,712.71-13,403.37-5,405.74

Finding the Fourth Proportional to 9,712.71, 13,403.37 and 5,405.74

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Solution

The fourth proportional to 9,712.71, 13,403.37 and 5,405.74 is: 7,459.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,712.71 : 13,403.37 = 5,405.74 : x
  2. Step 2: Convert to fraction form
    9,712.71/13,403.37 = 5,405.74/x
  3. Step 3: Cross multiply
    9,712.71x = 13,403.37 × 5,405.74
  4. Step 4: Simplify right side
    9,712.71x = 72,455,120.11
  5. Step 5: Solve for x
    x = 72,455,120.11/9,712.71
  6. Step 6: Final answer
    x = 7,459.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.