Home / 5,130.90-7,690.86-1,843.08

Finding the Fourth Proportional to 5,130.90, 7,690.86 and 1,843.08

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Solution

The fourth proportional to 5,130.90, 7,690.86 and 1,843.08 is: 2,762.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.90 : 7,690.86 = 1,843.08 : x
  2. Step 2: Convert to fraction form
    5,130.90/7,690.86 = 1,843.08/x
  3. Step 3: Cross multiply
    5,130.90x = 7,690.86 × 1,843.08
  4. Step 4: Simplify right side
    5,130.90x = 14,174,870.25
  5. Step 5: Solve for x
    x = 14,174,870.25/5,130.90
  6. Step 6: Final answer
    x = 2,762.65

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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.