Home / 7,428.07-11,142.79-2,430.47

Finding the Fourth Proportional to 7,428.07, 11,142.79 and 2,430.47

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Solution

The fourth proportional to 7,428.07, 11,142.79 and 2,430.47 is: 3,645.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.07 : 11,142.79 = 2,430.47 : x
  2. Step 2: Convert to fraction form
    7,428.07/11,142.79 = 2,430.47/x
  3. Step 3: Cross multiply
    7,428.07x = 11,142.79 × 2,430.47
  4. Step 4: Simplify right side
    7,428.07x = 27,082,216.81
  5. Step 5: Solve for x
    x = 27,082,216.81/7,428.07
  6. Step 6: Final answer
    x = 3,645.93

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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.