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Finding the Fourth Proportional to 1,705.91, 2,352.95 and 1,648.76

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Solution

The fourth proportional to 1,705.91, 2,352.95 and 1,648.76 is: 2,274.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,705.91 : 2,352.95 = 1,648.76 : x
  2. Step 2: Convert to fraction form
    1,705.91/2,352.95 = 1,648.76/x
  3. Step 3: Cross multiply
    1,705.91x = 2,352.95 × 1,648.76
  4. Step 4: Simplify right side
    1,705.91x = 3,879,436.02
  5. Step 5: Solve for x
    x = 3,879,436.02/1,705.91
  6. Step 6: Final answer
    x = 2,274.11

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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.