Home / 1,513.28-2,085.85-1,015.74

Finding the Fourth Proportional to 1,513.28, 2,085.85 and 1,015.74

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Solution

The fourth proportional to 1,513.28, 2,085.85 and 1,015.74 is: 1,400.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,513.28 : 2,085.85 = 1,015.74 : x
  2. Step 2: Convert to fraction form
    1,513.28/2,085.85 = 1,015.74/x
  3. Step 3: Cross multiply
    1,513.28x = 2,085.85 × 1,015.74
  4. Step 4: Simplify right side
    1,513.28x = 2,118,682.55
  5. Step 5: Solve for x
    x = 2,118,682.55/1,513.28
  6. Step 6: Final answer
    x = 1,400.06

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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.