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Finding the Fourth Proportional to 3,335.16, 4,978.93 and 2,897.88

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Solution

The fourth proportional to 3,335.16, 4,978.93 and 2,897.88 is: 4,326.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,335.16 : 4,978.93 = 2,897.88 : x
  2. Step 2: Convert to fraction form
    3,335.16/4,978.93 = 2,897.88/x
  3. Step 3: Cross multiply
    3,335.16x = 4,978.93 × 2,897.88
  4. Step 4: Simplify right side
    3,335.16x = 14,428,341.67
  5. Step 5: Solve for x
    x = 14,428,341.67/3,335.16
  6. Step 6: Final answer
    x = 4,326.13

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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.