Home / 1,611.86-2,225.75-1,242.50

Finding the Fourth Proportional to 1,611.86, 2,225.75 and 1,242.50

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Solution

The fourth proportional to 1,611.86, 2,225.75 and 1,242.50 is: 1,715.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.86 : 2,225.75 = 1,242.50 : x
  2. Step 2: Convert to fraction form
    1,611.86/2,225.75 = 1,242.50/x
  3. Step 3: Cross multiply
    1,611.86x = 2,225.75 × 1,242.50
  4. Step 4: Simplify right side
    1,611.86x = 2,765,477.03
  5. Step 5: Solve for x
    x = 2,765,477.03/1,611.86
  6. Step 6: Final answer
    x = 1,715.71

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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.