Home / 5,210.40-7,815.42-1,747.56

Finding the Fourth Proportional to 5,210.40, 7,815.42 and 1,747.56

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Solution

The fourth proportional to 5,210.40, 7,815.42 and 1,747.56 is: 2,621.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.40 : 7,815.42 = 1,747.56 : x
  2. Step 2: Convert to fraction form
    5,210.40/7,815.42 = 1,747.56/x
  3. Step 3: Cross multiply
    5,210.40x = 7,815.42 × 1,747.56
  4. Step 4: Simplify right side
    5,210.40x = 13,657,915.38
  5. Step 5: Solve for x
    x = 13,657,915.38/5,210.40
  6. Step 6: Final answer
    x = 2,621.28

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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.