Home / 1,611.06-2,222.34-947.79

Finding the Fourth Proportional to 1,611.06, 2,222.34 and 947.79

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Solution

The fourth proportional to 1,611.06, 2,222.34 and 947.79 is: 1,307.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.06 : 2,222.34 = 947.79 : x
  2. Step 2: Convert to fraction form
    1,611.06/2,222.34 = 947.79/x
  3. Step 3: Cross multiply
    1,611.06x = 2,222.34 × 947.79
  4. Step 4: Simplify right side
    1,611.06x = 2,106,311.63
  5. Step 5: Solve for x
    x = 2,106,311.63/1,611.06
  6. Step 6: Final answer
    x = 1,307.41

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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.