Home / 1,946.08-2,686.80-1,238.32

Finding the Fourth Proportional to 1,946.08, 2,686.80 and 1,238.32

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Solution

The fourth proportional to 1,946.08, 2,686.80 and 1,238.32 is: 1,709.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.08 : 2,686.80 = 1,238.32 : x
  2. Step 2: Convert to fraction form
    1,946.08/2,686.80 = 1,238.32/x
  3. Step 3: Cross multiply
    1,946.08x = 2,686.80 × 1,238.32
  4. Step 4: Simplify right side
    1,946.08x = 3,327,118.18
  5. Step 5: Solve for x
    x = 3,327,118.18/1,946.08
  6. Step 6: Final answer
    x = 1,709.65

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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.