Home / 2,390.60-3,298.86-1,342.40

Finding the Fourth Proportional to 2,390.60, 3,298.86 and 1,342.40

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Solution

The fourth proportional to 2,390.60, 3,298.86 and 1,342.40 is: 1,852.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,390.60 : 3,298.86 = 1,342.40 : x
  2. Step 2: Convert to fraction form
    2,390.60/3,298.86 = 1,342.40/x
  3. Step 3: Cross multiply
    2,390.60x = 3,298.86 × 1,342.40
  4. Step 4: Simplify right side
    2,390.60x = 4,428,389.66
  5. Step 5: Solve for x
    x = 4,428,389.66/2,390.60
  6. Step 6: Final answer
    x = 1,852.42

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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.