Home / 2,119.40-2,925.37-1,490.07

Finding the Fourth Proportional to 2,119.40, 2,925.37 and 1,490.07

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Solution

The fourth proportional to 2,119.40, 2,925.37 and 1,490.07 is: 2,056.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.40 : 2,925.37 = 1,490.07 : x
  2. Step 2: Convert to fraction form
    2,119.40/2,925.37 = 1,490.07/x
  3. Step 3: Cross multiply
    2,119.40x = 2,925.37 × 1,490.07
  4. Step 4: Simplify right side
    2,119.40x = 4,359,006.08
  5. Step 5: Solve for x
    x = 4,359,006.08/2,119.40
  6. Step 6: Final answer
    x = 2,056.72

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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.