Home / 2,430.69-3,642.35-1,113.70

Finding the Fourth Proportional to 2,430.69, 3,642.35 and 1,113.70

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Solution

The fourth proportional to 2,430.69, 3,642.35 and 1,113.70 is: 1,668.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,430.69 : 3,642.35 = 1,113.70 : x
  2. Step 2: Convert to fraction form
    2,430.69/3,642.35 = 1,113.70/x
  3. Step 3: Cross multiply
    2,430.69x = 3,642.35 × 1,113.70
  4. Step 4: Simplify right side
    2,430.69x = 4,056,485.20
  5. Step 5: Solve for x
    x = 4,056,485.20/2,430.69
  6. Step 6: Final answer
    x = 1,668.86

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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.