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Finding the Fourth Proportional to 1,626.76, 2,244.76 and 928

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Solution

The fourth proportional to 1,626.76, 2,244.76 and 928 is: 1,280.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,626.76 : 2,244.76 = 928 : x
  2. Step 2: Convert to fraction form
    1,626.76/2,244.76 = 928/x
  3. Step 3: Cross multiply
    1,626.76x = 2,244.76 × 928
  4. Step 4: Simplify right side
    1,626.76x = 2,083,137.28
  5. Step 5: Solve for x
    x = 2,083,137.28/1,626.76
  6. Step 6: Final answer
    x = 1,280.54

Related Problems

Find fourth proportional to 813.38, 1,122.38 and 464
Half scale
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Double scale
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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.