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Finding the Fourth Proportional to 5,130.66, 7,080.19 and 3,005.92

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Solution

The fourth proportional to 5,130.66, 7,080.19 and 3,005.92 is: 4,148.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.66 : 7,080.19 = 3,005.92 : x
  2. Step 2: Convert to fraction form
    5,130.66/7,080.19 = 3,005.92/x
  3. Step 3: Cross multiply
    5,130.66x = 7,080.19 × 3,005.92
  4. Step 4: Simplify right side
    5,130.66x = 21,282,484.72
  5. Step 5: Solve for x
    x = 21,282,484.72/5,130.66
  6. Step 6: Final answer
    x = 4,148.10

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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.