Home / 2,585.54-3,880.74-1,720.46

Finding the Fourth Proportional to 2,585.54, 3,880.74 and 1,720.46

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Solution

The fourth proportional to 2,585.54, 3,880.74 and 1,720.46 is: 2,582.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,585.54 : 3,880.74 = 1,720.46 : x
  2. Step 2: Convert to fraction form
    2,585.54/3,880.74 = 1,720.46/x
  3. Step 3: Cross multiply
    2,585.54x = 3,880.74 × 1,720.46
  4. Step 4: Simplify right side
    2,585.54x = 6,676,638.54
  5. Step 5: Solve for x
    x = 6,676,638.54/2,585.54
  6. Step 6: Final answer
    x = 2,582.30

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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.