Home / 1,946.19-2,686.75-1,200.55

Finding the Fourth Proportional to 1,946.19, 2,686.75 and 1,200.55

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Solution

The fourth proportional to 1,946.19, 2,686.75 and 1,200.55 is: 1,657.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,946.19 : 2,686.75 = 1,200.55 : x
  2. Step 2: Convert to fraction form
    1,946.19/2,686.75 = 1,200.55/x
  3. Step 3: Cross multiply
    1,946.19x = 2,686.75 × 1,200.55
  4. Step 4: Simplify right side
    1,946.19x = 3,225,577.71
  5. Step 5: Solve for x
    x = 3,225,577.71/1,946.19
  6. Step 6: Final answer
    x = 1,657.38

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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.