Home / 2,948.94-4,421.64-1,389.30

Finding the Fourth Proportional to 2,948.94, 4,421.64 and 1,389.30

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Solution

The fourth proportional to 2,948.94, 4,421.64 and 1,389.30 is: 2,083.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,948.94 : 4,421.64 = 1,389.30 : x
  2. Step 2: Convert to fraction form
    2,948.94/4,421.64 = 1,389.30/x
  3. Step 3: Cross multiply
    2,948.94x = 4,421.64 × 1,389.30
  4. Step 4: Simplify right side
    2,948.94x = 6,142,984.45
  5. Step 5: Solve for x
    x = 6,142,984.45/2,948.94
  6. Step 6: Final answer
    x = 2,083.12

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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.