Home / 5,130.54-7,079.40-2,892.51

Finding the Fourth Proportional to 5,130.54, 7,079.40 and 2,892.51

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Solution

The fourth proportional to 5,130.54, 7,079.40 and 2,892.51 is: 3,991.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.54 : 7,079.40 = 2,892.51 : x
  2. Step 2: Convert to fraction form
    5,130.54/7,079.40 = 2,892.51/x
  3. Step 3: Cross multiply
    5,130.54x = 7,079.40 × 2,892.51
  4. Step 4: Simplify right side
    5,130.54x = 20,477,235.29
  5. Step 5: Solve for x
    x = 20,477,235.29/5,130.54
  6. Step 6: Final answer
    x = 3,991.24

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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.