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Finding the Fourth Proportional to 7,047, 10,521.09 and 6,308.28

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Solution

The fourth proportional to 7,047, 10,521.09 and 6,308.28 is: 9,418.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,047 : 10,521.09 = 6,308.28 : x
  2. Step 2: Convert to fraction form
    7,047/10,521.09 = 6,308.28/x
  3. Step 3: Cross multiply
    7,047x = 10,521.09 × 6,308.28
  4. Step 4: Simplify right side
    7,047x = 66,369,981.63
  5. Step 5: Solve for x
    x = 66,369,981.63/7,047
  6. Step 6: Final answer
    x = 9,418.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.