Home / 5,220.90-7,830.81-1,758.06

Finding the Fourth Proportional to 5,220.90, 7,830.81 and 1,758.06

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Solution

The fourth proportional to 5,220.90, 7,830.81 and 1,758.06 is: 2,636.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.90 : 7,830.81 = 1,758.06 : x
  2. Step 2: Convert to fraction form
    5,220.90/7,830.81 = 1,758.06/x
  3. Step 3: Cross multiply
    5,220.90x = 7,830.81 × 1,758.06
  4. Step 4: Simplify right side
    5,220.90x = 13,767,033.83
  5. Step 5: Solve for x
    x = 13,767,033.83/5,220.90
  6. Step 6: Final answer
    x = 2,636.91

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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.