Home / 2,390.63-3,299.20-1,342.76

Finding the Fourth Proportional to 2,390.63, 3,299.20 and 1,342.76

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Solution

The fourth proportional to 2,390.63, 3,299.20 and 1,342.76 is: 1,853.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.63 : 3,299.20 = 1,342.76 : x
  2. Step 2: Convert to fraction form
    2,390.63/3,299.20 = 1,342.76/x
  3. Step 3: Cross multiply
    2,390.63x = 3,299.20 × 1,342.76
  4. Step 4: Simplify right side
    2,390.63x = 4,430,013.94
  5. Step 5: Solve for x
    x = 4,430,013.94/2,390.63
  6. Step 6: Final answer
    x = 1,853.08

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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.