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Finding the Fourth Proportional to 4,985.82, 7,479.41 and 1,698.02

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Solution

The fourth proportional to 4,985.82, 7,479.41 and 1,698.02 is: 2,547.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.82 : 7,479.41 = 1,698.02 : x
  2. Step 2: Convert to fraction form
    4,985.82/7,479.41 = 1,698.02/x
  3. Step 3: Cross multiply
    4,985.82x = 7,479.41 × 1,698.02
  4. Step 4: Simplify right side
    4,985.82x = 12,700,187.77
  5. Step 5: Solve for x
    x = 12,700,187.77/4,985.82
  6. Step 6: Final answer
    x = 2,547.26

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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.