Home / 9,428.81-14,143.90-2,855.51

Finding the Fourth Proportional to 9,428.81, 14,143.90 and 2,855.51

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Solution

The fourth proportional to 9,428.81, 14,143.90 and 2,855.51 is: 4,283.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,428.81 : 14,143.90 = 2,855.51 : x
  2. Step 2: Convert to fraction form
    9,428.81/14,143.90 = 2,855.51/x
  3. Step 3: Cross multiply
    9,428.81x = 14,143.90 × 2,855.51
  4. Step 4: Simplify right side
    9,428.81x = 40,388,028.42
  5. Step 5: Solve for x
    x = 40,388,028.42/9,428.81
  6. Step 6: Final answer
    x = 4,283.47

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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.