Home / 2,421.61-3,344.95-1,868.91

Finding the Fourth Proportional to 2,421.61, 3,344.95 and 1,868.91

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Solution

The fourth proportional to 2,421.61, 3,344.95 and 1,868.91 is: 2,581.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.61 : 3,344.95 = 1,868.91 : x
  2. Step 2: Convert to fraction form
    2,421.61/3,344.95 = 1,868.91/x
  3. Step 3: Cross multiply
    2,421.61x = 3,344.95 × 1,868.91
  4. Step 4: Simplify right side
    2,421.61x = 6,251,410.50
  5. Step 5: Solve for x
    x = 6,251,410.50/2,421.61
  6. Step 6: Final answer
    x = 2,581.51

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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.