Home / 2,890.95-3,989.51-1,712.10

Finding the Fourth Proportional to 2,890.95, 3,989.51 and 1,712.10

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Solution

The fourth proportional to 2,890.95, 3,989.51 and 1,712.10 is: 2,362.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,890.95 : 3,989.51 = 1,712.10 : x
  2. Step 2: Convert to fraction form
    2,890.95/3,989.51 = 1,712.10/x
  3. Step 3: Cross multiply
    2,890.95x = 3,989.51 × 1,712.10
  4. Step 4: Simplify right side
    2,890.95x = 6,830,440.07
  5. Step 5: Solve for x
    x = 6,830,440.07/2,890.95
  6. Step 6: Final answer
    x = 2,362.70

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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.