Home / 2,920.85-4,386.12-2,898.17

Finding the Fourth Proportional to 2,920.85, 4,386.12 and 2,898.17

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Solution

The fourth proportional to 2,920.85, 4,386.12 and 2,898.17 is: 4,352.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.85 : 4,386.12 = 2,898.17 : x
  2. Step 2: Convert to fraction form
    2,920.85/4,386.12 = 2,898.17/x
  3. Step 3: Cross multiply
    2,920.85x = 4,386.12 × 2,898.17
  4. Step 4: Simplify right side
    2,920.85x = 12,711,699.47
  5. Step 5: Solve for x
    x = 12,711,699.47/2,920.85
  6. Step 6: Final answer
    x = 4,352.06

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1.5x scale

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.