Home / 7,114.90-9,818.79-4,130.55

Finding the Fourth Proportional to 7,114.90, 9,818.79 and 4,130.55

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Solution

The fourth proportional to 7,114.90, 9,818.79 and 4,130.55 is: 5,700.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,114.90 : 9,818.79 = 4,130.55 : x
  2. Step 2: Convert to fraction form
    7,114.90/9,818.79 = 4,130.55/x
  3. Step 3: Cross multiply
    7,114.90x = 9,818.79 × 4,130.55
  4. Step 4: Simplify right side
    7,114.90x = 40,557,003.03
  5. Step 5: Solve for x
    x = 40,557,003.03/7,114.90
  6. Step 6: Final answer
    x = 5,700.29

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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.