Home / 2,890.65-3,988.53-1,712.10

Finding the Fourth Proportional to 2,890.65, 3,988.53 and 1,712.10

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Solution

The fourth proportional to 2,890.65, 3,988.53 and 1,712.10 is: 2,362.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.65 : 3,988.53 = 1,712.10 : x
  2. Step 2: Convert to fraction form
    2,890.65/3,988.53 = 1,712.10/x
  3. Step 3: Cross multiply
    2,890.65x = 3,988.53 × 1,712.10
  4. Step 4: Simplify right side
    2,890.65x = 6,828,762.21
  5. Step 5: Solve for x
    x = 6,828,762.21/2,890.65
  6. Step 6: Final answer
    x = 2,362.36

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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.