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Finding the Fourth Proportional to 4,721.78, 7,088.14 and 2,534.78

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Solution

The fourth proportional to 4,721.78, 7,088.14 and 2,534.78 is: 3,805.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,721.78 : 7,088.14 = 2,534.78 : x
  2. Step 2: Convert to fraction form
    4,721.78/7,088.14 = 2,534.78/x
  3. Step 3: Cross multiply
    4,721.78x = 7,088.14 × 2,534.78
  4. Step 4: Simplify right side
    4,721.78x = 17,966,875.51
  5. Step 5: Solve for x
    x = 17,966,875.51/4,721.78
  6. Step 6: Final answer
    x = 3,805.11

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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.