Home / 1,095.19-1,511.55-623.10

Finding the Fourth Proportional to 1,095.19, 1,511.55 and 623.10

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Solution

The fourth proportional to 1,095.19, 1,511.55 and 623.10 is: 859.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.19 : 1,511.55 = 623.10 : x
  2. Step 2: Convert to fraction form
    1,095.19/1,511.55 = 623.10/x
  3. Step 3: Cross multiply
    1,095.19x = 1,511.55 × 623.10
  4. Step 4: Simplify right side
    1,095.19x = 941,846.81
  5. Step 5: Solve for x
    x = 941,846.81/1,095.19
  6. Step 6: Final answer
    x = 859.98

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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.