Home / 2,358.40-3,541.20-1,386.40

Finding the Fourth Proportional to 2,358.40, 3,541.20 and 1,386.40

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Solution

The fourth proportional to 2,358.40, 3,541.20 and 1,386.40 is: 2,081.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,358.40 : 3,541.20 = 1,386.40 : x
  2. Step 2: Convert to fraction form
    2,358.40/3,541.20 = 1,386.40/x
  3. Step 3: Cross multiply
    2,358.40x = 3,541.20 × 1,386.40
  4. Step 4: Simplify right side
    2,358.40x = 4,909,519.68
  5. Step 5: Solve for x
    x = 4,909,519.68/2,358.40
  6. Step 6: Final answer
    x = 2,081.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.