Home / 2,946.78-4,058.10-2,421.90

Finding the Fourth Proportional to 2,946.78, 4,058.10 and 2,421.90

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Solution

The fourth proportional to 2,946.78, 4,058.10 and 2,421.90 is: 3,335.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,946.78 : 4,058.10 = 2,421.90 : x
  2. Step 2: Convert to fraction form
    2,946.78/4,058.10 = 2,421.90/x
  3. Step 3: Cross multiply
    2,946.78x = 4,058.10 × 2,421.90
  4. Step 4: Simplify right side
    2,946.78x = 9,828,312.39
  5. Step 5: Solve for x
    x = 9,828,312.39/2,946.78
  6. Step 6: Final answer
    x = 3,335.27

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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.