Home / 1,421.01-2,130.39-446.58

Finding the Fourth Proportional to 1,421.01, 2,130.39 and 446.58

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Solution

The fourth proportional to 1,421.01, 2,130.39 and 446.58 is: 669.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421.01 : 2,130.39 = 446.58 : x
  2. Step 2: Convert to fraction form
    1,421.01/2,130.39 = 446.58/x
  3. Step 3: Cross multiply
    1,421.01x = 2,130.39 × 446.58
  4. Step 4: Simplify right side
    1,421.01x = 951,389.57
  5. Step 5: Solve for x
    x = 951,389.57/1,421.01
  6. Step 6: Final answer
    x = 669.52

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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.