Home / 1,861.60-2,569.08-1,022.40

Finding the Fourth Proportional to 1,861.60, 2,569.08 and 1,022.40

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Solution

The fourth proportional to 1,861.60, 2,569.08 and 1,022.40 is: 1,410.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.60 : 2,569.08 = 1,022.40 : x
  2. Step 2: Convert to fraction form
    1,861.60/2,569.08 = 1,022.40/x
  3. Step 3: Cross multiply
    1,861.60x = 2,569.08 × 1,022.40
  4. Step 4: Simplify right side
    1,861.60x = 2,626,622.28
  5. Step 5: Solve for x
    x = 2,626,622.28/1,861.60
  6. Step 6: Final answer
    x = 1,410.95

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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.