Home / 3,987.60-5,506.24-2,417.80

Finding the Fourth Proportional to 3,987.60, 5,506.24 and 2,417.80

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Solution

The fourth proportional to 3,987.60, 5,506.24 and 2,417.80 is: 3,338.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.60 : 5,506.24 = 2,417.80 : x
  2. Step 2: Convert to fraction form
    3,987.60/5,506.24 = 2,417.80/x
  3. Step 3: Cross multiply
    3,987.60x = 5,506.24 × 2,417.80
  4. Step 4: Simplify right side
    3,987.60x = 13,312,987.07
  5. Step 5: Solve for x
    x = 13,312,987.07/3,987.60
  6. Step 6: Final answer
    x = 3,338.60

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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.