Home / 3,117.36-4,297.65-2,490

Finding the Fourth Proportional to 3,117.36, 4,297.65 and 2,490

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Solution

The fourth proportional to 3,117.36, 4,297.65 and 2,490 is: 3,432.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.36 : 4,297.65 = 2,490 : x
  2. Step 2: Convert to fraction form
    3,117.36/4,297.65 = 2,490/x
  3. Step 3: Cross multiply
    3,117.36x = 4,297.65 × 2,490
  4. Step 4: Simplify right side
    3,117.36x = 10,701,148.50
  5. Step 5: Solve for x
    x = 10,701,148.50/3,117.36
  6. Step 6: Final answer
    x = 3,432.76

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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.