Home / 1,598.28-2,205.60-890.10

Finding the Fourth Proportional to 1,598.28, 2,205.60 and 890.10

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Solution

The fourth proportional to 1,598.28, 2,205.60 and 890.10 is: 1,228.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,598.28 : 2,205.60 = 890.10 : x
  2. Step 2: Convert to fraction form
    1,598.28/2,205.60 = 890.10/x
  3. Step 3: Cross multiply
    1,598.28x = 2,205.60 × 890.10
  4. Step 4: Simplify right side
    1,598.28x = 1,963,204.56
  5. Step 5: Solve for x
    x = 1,963,204.56/1,598.28
  6. Step 6: Final answer
    x = 1,228.32

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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.