Home / 1,723.63-2,378.51-977.77

Finding the Fourth Proportional to 1,723.63, 2,378.51 and 977.77

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Solution

The fourth proportional to 1,723.63, 2,378.51 and 977.77 is: 1,349.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.63 : 2,378.51 = 977.77 : x
  2. Step 2: Convert to fraction form
    1,723.63/2,378.51 = 977.77/x
  3. Step 3: Cross multiply
    1,723.63x = 2,378.51 × 977.77
  4. Step 4: Simplify right side
    1,723.63x = 2,325,624.89
  5. Step 5: Solve for x
    x = 2,325,624.89/1,723.63
  6. Step 6: Final answer
    x = 1,349.26

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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.