Home / 1,577.22-2,176.68-914.07

Finding the Fourth Proportional to 1,577.22, 2,176.68 and 914.07

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Solution

The fourth proportional to 1,577.22, 2,176.68 and 914.07 is: 1,261.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,577.22 : 2,176.68 = 914.07 : x
  2. Step 2: Convert to fraction form
    1,577.22/2,176.68 = 914.07/x
  3. Step 3: Cross multiply
    1,577.22x = 2,176.68 × 914.07
  4. Step 4: Simplify right side
    1,577.22x = 1,989,637.23
  5. Step 5: Solve for x
    x = 1,989,637.23/1,577.22
  6. Step 6: Final answer
    x = 1,261.49

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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.