Home / 1,746.60-2,409.48-1,221.72

Finding the Fourth Proportional to 1,746.60, 2,409.48 and 1,221.72

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Solution

The fourth proportional to 1,746.60, 2,409.48 and 1,221.72 is: 1,685.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,746.60 : 2,409.48 = 1,221.72 : x
  2. Step 2: Convert to fraction form
    1,746.60/2,409.48 = 1,221.72/x
  3. Step 3: Cross multiply
    1,746.60x = 2,409.48 × 1,221.72
  4. Step 4: Simplify right side
    1,746.60x = 2,943,709.91
  5. Step 5: Solve for x
    x = 2,943,709.91/1,746.60
  6. Step 6: Final answer
    x = 1,685.39

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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.