Home / 1,561.49-2,343.40-739.77

Finding the Fourth Proportional to 1,561.49, 2,343.40 and 739.77

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Solution

The fourth proportional to 1,561.49, 2,343.40 and 739.77 is: 1,110.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.49 : 2,343.40 = 739.77 : x
  2. Step 2: Convert to fraction form
    1,561.49/2,343.40 = 739.77/x
  3. Step 3: Cross multiply
    1,561.49x = 2,343.40 × 739.77
  4. Step 4: Simplify right side
    1,561.49x = 1,733,573.32
  5. Step 5: Solve for x
    x = 1,733,573.32/1,561.49
  6. Step 6: Final answer
    x = 1,110.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.