Home / 2,488.77-3,434.54-1,440.63

Finding the Fourth Proportional to 2,488.77, 3,434.54 and 1,440.63

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Solution

The fourth proportional to 2,488.77, 3,434.54 and 1,440.63 is: 1,988.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,488.77 : 3,434.54 = 1,440.63 : x
  2. Step 2: Convert to fraction form
    2,488.77/3,434.54 = 1,440.63/x
  3. Step 3: Cross multiply
    2,488.77x = 3,434.54 × 1,440.63
  4. Step 4: Simplify right side
    2,488.77x = 4,947,894.16
  5. Step 5: Solve for x
    x = 4,947,894.16/2,488.77
  6. Step 6: Final answer
    x = 1,988.09

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1.5x scale

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.