Home / 2,155.90-2,971.74-1,762.24

Finding the Fourth Proportional to 2,155.90, 2,971.74 and 1,762.24

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Solution

The fourth proportional to 2,155.90, 2,971.74 and 1,762.24 is: 2,429.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,155.90 : 2,971.74 = 1,762.24 : x
  2. Step 2: Convert to fraction form
    2,155.90/2,971.74 = 1,762.24/x
  3. Step 3: Cross multiply
    2,155.90x = 2,971.74 × 1,762.24
  4. Step 4: Simplify right side
    2,155.90x = 5,236,919.10
  5. Step 5: Solve for x
    x = 5,236,919.10/2,155.90
  6. Step 6: Final answer
    x = 2,429.11

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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.