Home / 2,423.63-3,345.14-1,428.55

Finding the Fourth Proportional to 2,423.63, 3,345.14 and 1,428.55

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Solution

The fourth proportional to 2,423.63, 3,345.14 and 1,428.55 is: 1,971.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,423.63 : 3,345.14 = 1,428.55 : x
  2. Step 2: Convert to fraction form
    2,423.63/3,345.14 = 1,428.55/x
  3. Step 3: Cross multiply
    2,423.63x = 3,345.14 × 1,428.55
  4. Step 4: Simplify right side
    2,423.63x = 4,778,699.75
  5. Step 5: Solve for x
    x = 4,778,699.75/2,423.63
  6. Step 6: Final answer
    x = 1,971.71

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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.