Home / 2,054.90-3,082.80-1,015.40

Finding the Fourth Proportional to 2,054.90, 3,082.80 and 1,015.40

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Solution

The fourth proportional to 2,054.90, 3,082.80 and 1,015.40 is: 1,523.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,054.90 : 3,082.80 = 1,015.40 : x
  2. Step 2: Convert to fraction form
    2,054.90/3,082.80 = 1,015.40/x
  3. Step 3: Cross multiply
    2,054.90x = 3,082.80 × 1,015.40
  4. Step 4: Simplify right side
    2,054.90x = 3,130,275.12
  5. Step 5: Solve for x
    x = 3,130,275.12/2,054.90
  6. Step 6: Final answer
    x = 1,523.32

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1.5x scale

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.