Home / 5,148.90-7,721.46-1,685.34

Finding the Fourth Proportional to 5,148.90, 7,721.46 and 1,685.34

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Solution

The fourth proportional to 5,148.90, 7,721.46 and 1,685.34 is: 2,527.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.90 : 7,721.46 = 1,685.34 : x
  2. Step 2: Convert to fraction form
    5,148.90/7,721.46 = 1,685.34/x
  3. Step 3: Cross multiply
    5,148.90x = 7,721.46 × 1,685.34
  4. Step 4: Simplify right side
    5,148.90x = 13,013,285.40
  5. Step 5: Solve for x
    x = 13,013,285.40/5,148.90
  6. Step 6: Final answer
    x = 2,527.39

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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.