Home / 5,386.09-7,430.30-3,148.06

Finding the Fourth Proportional to 5,386.09, 7,430.30 and 3,148.06

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Solution

The fourth proportional to 5,386.09, 7,430.30 and 3,148.06 is: 4,342.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.09 : 7,430.30 = 3,148.06 : x
  2. Step 2: Convert to fraction form
    5,386.09/7,430.30 = 3,148.06/x
  3. Step 3: Cross multiply
    5,386.09x = 7,430.30 × 3,148.06
  4. Step 4: Simplify right side
    5,386.09x = 23,391,000.94
  5. Step 5: Solve for x
    x = 23,391,000.94/5,386.09
  6. Step 6: Final answer
    x = 4,342.86

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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.