Home / 2,210.58-3,320.10-1,390.50

Finding the Fourth Proportional to 2,210.58, 3,320.10 and 1,390.50

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Solution

The fourth proportional to 2,210.58, 3,320.10 and 1,390.50 is: 2,088.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,210.58 : 3,320.10 = 1,390.50 : x
  2. Step 2: Convert to fraction form
    2,210.58/3,320.10 = 1,390.50/x
  3. Step 3: Cross multiply
    2,210.58x = 3,320.10 × 1,390.50
  4. Step 4: Simplify right side
    2,210.58x = 4,616,599.05
  5. Step 5: Solve for x
    x = 4,616,599.05/2,210.58
  6. Step 6: Final answer
    x = 2,088.41

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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.