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Finding the Fourth Proportional to 1,798.51, 2,479.12 and 1,647.85

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Solution

The fourth proportional to 1,798.51, 2,479.12 and 1,647.85 is: 2,271.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,798.51 : 2,479.12 = 1,647.85 : x
  2. Step 2: Convert to fraction form
    1,798.51/2,479.12 = 1,647.85/x
  3. Step 3: Cross multiply
    1,798.51x = 2,479.12 × 1,647.85
  4. Step 4: Simplify right side
    1,798.51x = 4,085,217.89
  5. Step 5: Solve for x
    x = 4,085,217.89/1,798.51
  6. Step 6: Final answer
    x = 2,271.45

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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.