Home / 2,421.81-3,634.61-1,686.60

Finding the Fourth Proportional to 2,421.81, 3,634.61 and 1,686.60

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Solution

The fourth proportional to 2,421.81, 3,634.61 and 1,686.60 is: 2,531.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.81 : 3,634.61 = 1,686.60 : x
  2. Step 2: Convert to fraction form
    2,421.81/3,634.61 = 1,686.60/x
  3. Step 3: Cross multiply
    2,421.81x = 3,634.61 × 1,686.60
  4. Step 4: Simplify right side
    2,421.81x = 6,130,124.79
  5. Step 5: Solve for x
    x = 6,130,124.79/2,421.81
  6. Step 6: Final answer
    x = 2,531.22

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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.