Home / 1,440.20-2,158.51-617.51

Finding the Fourth Proportional to 1,440.20, 2,158.51 and 617.51

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Solution

The fourth proportional to 1,440.20, 2,158.51 and 617.51 is: 925.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,440.20 : 2,158.51 = 617.51 : x
  2. Step 2: Convert to fraction form
    1,440.20/2,158.51 = 617.51/x
  3. Step 3: Cross multiply
    1,440.20x = 2,158.51 × 617.51
  4. Step 4: Simplify right side
    1,440.20x = 1,332,901.51
  5. Step 5: Solve for x
    x = 1,332,901.51/1,440.20
  6. Step 6: Final answer
    x = 925.50

Related Problems

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.