Home / 7,421.09-10,228.29-6,470.96

Finding the Fourth Proportional to 7,421.09, 10,228.29 and 6,470.96

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Solution

The fourth proportional to 7,421.09, 10,228.29 and 6,470.96 is: 8,918.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.09 : 10,228.29 = 6,470.96 : x
  2. Step 2: Convert to fraction form
    7,421.09/10,228.29 = 6,470.96/x
  3. Step 3: Cross multiply
    7,421.09x = 10,228.29 × 6,470.96
  4. Step 4: Simplify right side
    7,421.09x = 66,186,855.46
  5. Step 5: Solve for x
    x = 66,186,855.46/7,421.09
  6. Step 6: Final answer
    x = 8,918.75

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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.