Home / 7,035.21-9,708.47-3,891.40

Finding the Fourth Proportional to 7,035.21, 9,708.47 and 3,891.40

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Solution

The fourth proportional to 7,035.21, 9,708.47 and 3,891.40 is: 5,370.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,035.21 : 9,708.47 = 3,891.40 : x
  2. Step 2: Convert to fraction form
    7,035.21/9,708.47 = 3,891.40/x
  3. Step 3: Cross multiply
    7,035.21x = 9,708.47 × 3,891.40
  4. Step 4: Simplify right side
    7,035.21x = 37,779,540.16
  5. Step 5: Solve for x
    x = 37,779,540.16/7,035.21
  6. Step 6: Final answer
    x = 5,370.07

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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.