Home / 2,420.41-3,342.08-1,946.78

Finding the Fourth Proportional to 2,420.41, 3,342.08 and 1,946.78

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Solution

The fourth proportional to 2,420.41, 3,342.08 and 1,946.78 is: 2,688.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.41 : 3,342.08 = 1,946.78 : x
  2. Step 2: Convert to fraction form
    2,420.41/3,342.08 = 1,946.78/x
  3. Step 3: Cross multiply
    2,420.41x = 3,342.08 × 1,946.78
  4. Step 4: Simplify right side
    2,420.41x = 6,506,294.50
  5. Step 5: Solve for x
    x = 6,506,294.50/2,420.41
  6. Step 6: Final answer
    x = 2,688.10

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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.