Home / 2,319.40-3,200.60-1,434.88

Finding the Fourth Proportional to 2,319.40, 3,200.60 and 1,434.88

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Solution

The fourth proportional to 2,319.40, 3,200.60 and 1,434.88 is: 1,980.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.40 : 3,200.60 = 1,434.88 : x
  2. Step 2: Convert to fraction form
    2,319.40/3,200.60 = 1,434.88/x
  3. Step 3: Cross multiply
    2,319.40x = 3,200.60 × 1,434.88
  4. Step 4: Simplify right side
    2,319.40x = 4,592,476.93
  5. Step 5: Solve for x
    x = 4,592,476.93/2,319.40
  6. Step 6: Final answer
    x = 1,980.03

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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.