Home / 1,622.98-2,239.40-914.77

Finding the Fourth Proportional to 1,622.98, 2,239.40 and 914.77

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Solution

The fourth proportional to 1,622.98, 2,239.40 and 914.77 is: 1,262.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.98 : 2,239.40 = 914.77 : x
  2. Step 2: Convert to fraction form
    1,622.98/2,239.40 = 914.77/x
  3. Step 3: Cross multiply
    1,622.98x = 2,239.40 × 914.77
  4. Step 4: Simplify right side
    1,622.98x = 2,048,524.74
  5. Step 5: Solve for x
    x = 2,048,524.74/1,622.98
  6. Step 6: Final answer
    x = 1,262.20

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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.