Home / 2,421.90-3,652.29-2,389.10

Finding the Fourth Proportional to 2,421.90, 3,652.29 and 2,389.10

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Solution

The fourth proportional to 2,421.90, 3,652.29 and 2,389.10 is: 3,602.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,421.90 : 3,652.29 = 2,389.10 : x
  2. Step 2: Convert to fraction form
    2,421.90/3,652.29 = 2,389.10/x
  3. Step 3: Cross multiply
    2,421.90x = 3,652.29 × 2,389.10
  4. Step 4: Simplify right side
    2,421.90x = 8,725,667.78
  5. Step 5: Solve for x
    x = 8,725,667.78/2,421.90
  6. Step 6: Final answer
    x = 3,602.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.