Home / 1,095.51-1,631.64-1,090.21

Finding the Fourth Proportional to 1,095.51, 1,631.64 and 1,090.21

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Solution

The fourth proportional to 1,095.51, 1,631.64 and 1,090.21 is: 1,623.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.51 : 1,631.64 = 1,090.21 : x
  2. Step 2: Convert to fraction form
    1,095.51/1,631.64 = 1,090.21/x
  3. Step 3: Cross multiply
    1,095.51x = 1,631.64 × 1,090.21
  4. Step 4: Simplify right side
    1,095.51x = 1,778,830.24
  5. Step 5: Solve for x
    x = 1,778,830.24/1,095.51
  6. Step 6: Final answer
    x = 1,623.75

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.