Home / 2,485.85-3,430.49-1,366.75

Finding the Fourth Proportional to 2,485.85, 3,430.49 and 1,366.75

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Solution

The fourth proportional to 2,485.85, 3,430.49 and 1,366.75 is: 1,886.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,485.85 : 3,430.49 = 1,366.75 : x
  2. Step 2: Convert to fraction form
    2,485.85/3,430.49 = 1,366.75/x
  3. Step 3: Cross multiply
    2,485.85x = 3,430.49 × 1,366.75
  4. Step 4: Simplify right side
    2,485.85x = 4,688,622.21
  5. Step 5: Solve for x
    x = 4,688,622.21/2,485.85
  6. Step 6: Final answer
    x = 1,886.12

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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.