Home / 2,121.60-2,927.98-1,177.62

Finding the Fourth Proportional to 2,121.60, 2,927.98 and 1,177.62

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Solution

The fourth proportional to 2,121.60, 2,927.98 and 1,177.62 is: 1,625.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.60 : 2,927.98 = 1,177.62 : x
  2. Step 2: Convert to fraction form
    2,121.60/2,927.98 = 1,177.62/x
  3. Step 3: Cross multiply
    2,121.60x = 2,927.98 × 1,177.62
  4. Step 4: Simplify right side
    2,121.60x = 3,448,047.81
  5. Step 5: Solve for x
    x = 3,448,047.81/2,121.60
  6. Step 6: Final answer
    x = 1,625.21

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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.