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Finding the Fourth Proportional to 9,428.53, 13,009.93 and 5,448.87

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Solution

The fourth proportional to 9,428.53, 13,009.93 and 5,448.87 is: 7,518.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,428.53 : 13,009.93 = 5,448.87 : x
  2. Step 2: Convert to fraction form
    9,428.53/13,009.93 = 5,448.87/x
  3. Step 3: Cross multiply
    9,428.53x = 13,009.93 × 5,448.87
  4. Step 4: Simplify right side
    9,428.53x = 70,889,442.23
  5. Step 5: Solve for x
    x = 70,889,442.23/9,428.53
  6. Step 6: Final answer
    x = 7,518.61

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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.