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Finding the Fourth Proportional to 7,640.16, 10,541.04 and 5,156.64

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Solution

The fourth proportional to 7,640.16, 10,541.04 and 5,156.64 is: 7,114.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,640.16 : 10,541.04 = 5,156.64 : x
  2. Step 2: Convert to fraction form
    7,640.16/10,541.04 = 5,156.64/x
  3. Step 3: Cross multiply
    7,640.16x = 10,541.04 × 5,156.64
  4. Step 4: Simplify right side
    7,640.16x = 54,356,348.51
  5. Step 5: Solve for x
    x = 54,356,348.51/7,640.16
  6. Step 6: Final answer
    x = 7,114.56

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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.