Home / 2,898.80-4,000.64-1,720.16

Finding the Fourth Proportional to 2,898.80, 4,000.64 and 1,720.16

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Solution

The fourth proportional to 2,898.80, 4,000.64 and 1,720.16 is: 2,374.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,898.80 : 4,000.64 = 1,720.16 : x
  2. Step 2: Convert to fraction form
    2,898.80/4,000.64 = 1,720.16/x
  3. Step 3: Cross multiply
    2,898.80x = 4,000.64 × 1,720.16
  4. Step 4: Simplify right side
    2,898.80x = 6,881,740.90
  5. Step 5: Solve for x
    x = 6,881,740.90/2,898.80
  6. Step 6: Final answer
    x = 2,374.00

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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.