Home / 1,674.21-2,311.55-1,045.70

Finding the Fourth Proportional to 1,674.21, 2,311.55 and 1,045.70

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Solution

The fourth proportional to 1,674.21, 2,311.55 and 1,045.70 is: 1,443.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,674.21 : 2,311.55 = 1,045.70 : x
  2. Step 2: Convert to fraction form
    1,674.21/2,311.55 = 1,045.70/x
  3. Step 3: Cross multiply
    1,674.21x = 2,311.55 × 1,045.70
  4. Step 4: Simplify right side
    1,674.21x = 2,417,178.89
  5. Step 5: Solve for x
    x = 2,417,178.89/1,674.21
  6. Step 6: Final answer
    x = 1,443.77

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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.