Home / 5,386.50-7,435.40-3,290.63

Finding the Fourth Proportional to 5,386.50, 7,435.40 and 3,290.63

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Solution

The fourth proportional to 5,386.50, 7,435.40 and 3,290.63 is: 4,542.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.50 : 7,435.40 = 3,290.63 : x
  2. Step 2: Convert to fraction form
    5,386.50/7,435.40 = 3,290.63/x
  3. Step 3: Cross multiply
    5,386.50x = 7,435.40 × 3,290.63
  4. Step 4: Simplify right side
    5,386.50x = 24,467,096.67
  5. Step 5: Solve for x
    x = 24,467,096.67/5,386.50
  6. Step 6: Final answer
    x = 4,542.30

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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.