Home / 1,577.79-2,177.64-914.58

Finding the Fourth Proportional to 1,577.79, 2,177.64 and 914.58

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Solution

The fourth proportional to 1,577.79, 2,177.64 and 914.58 is: 1,262.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.79 : 2,177.64 = 914.58 : x
  2. Step 2: Convert to fraction form
    1,577.79/2,177.64 = 914.58/x
  3. Step 3: Cross multiply
    1,577.79x = 2,177.64 × 914.58
  4. Step 4: Simplify right side
    1,577.79x = 1,991,625.99
  5. Step 5: Solve for x
    x = 1,991,625.99/1,577.79
  6. Step 6: Final answer
    x = 1,262.29

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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.