Home / 3,403.74-4,697.02-1,987.51

Finding the Fourth Proportional to 3,403.74, 4,697.02 and 1,987.51

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Solution

The fourth proportional to 3,403.74, 4,697.02 and 1,987.51 is: 2,742.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,403.74 : 4,697.02 = 1,987.51 : x
  2. Step 2: Convert to fraction form
    3,403.74/4,697.02 = 1,987.51/x
  3. Step 3: Cross multiply
    3,403.74x = 4,697.02 × 1,987.51
  4. Step 4: Simplify right side
    3,403.74x = 9,335,373.77
  5. Step 5: Solve for x
    x = 9,335,373.77/3,403.74
  6. Step 6: Final answer
    x = 2,742.68

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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.