Home / 5,130.16-7,080.65-2,892.06

Finding the Fourth Proportional to 5,130.16, 7,080.65 and 2,892.06

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Solution

The fourth proportional to 5,130.16, 7,080.65 and 2,892.06 is: 3,991.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.16 : 7,080.65 = 2,892.06 : x
  2. Step 2: Convert to fraction form
    5,130.16/7,080.65 = 2,892.06/x
  3. Step 3: Cross multiply
    5,130.16x = 7,080.65 × 2,892.06
  4. Step 4: Simplify right side
    5,130.16x = 20,477,664.64
  5. Step 5: Solve for x
    x = 20,477,664.64/5,130.16
  6. Step 6: Final answer
    x = 3,991.62

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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.