Home / 1,590.21-2,385.36-896.76

Finding the Fourth Proportional to 1,590.21, 2,385.36 and 896.76

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Solution

The fourth proportional to 1,590.21, 2,385.36 and 896.76 is: 1,345.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,590.21 : 2,385.36 = 896.76 : x
  2. Step 2: Convert to fraction form
    1,590.21/2,385.36 = 896.76/x
  3. Step 3: Cross multiply
    1,590.21x = 2,385.36 × 896.76
  4. Step 4: Simplify right side
    1,590.21x = 2,139,095.43
  5. Step 5: Solve for x
    x = 2,139,095.43/1,590.21
  6. Step 6: Final answer
    x = 1,345.17

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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.