Home / 2,418.30-3,628.80-1,031.40

Finding the Fourth Proportional to 2,418.30, 3,628.80 and 1,031.40

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Solution

The fourth proportional to 2,418.30, 3,628.80 and 1,031.40 is: 1,547.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,418.30 : 3,628.80 = 1,031.40 : x
  2. Step 2: Convert to fraction form
    2,418.30/3,628.80 = 1,031.40/x
  3. Step 3: Cross multiply
    2,418.30x = 3,628.80 × 1,031.40
  4. Step 4: Simplify right side
    2,418.30x = 3,742,744.32
  5. Step 5: Solve for x
    x = 3,742,744.32/2,418.30
  6. Step 6: Final answer
    x = 1,547.68

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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.