Home / 1,312.08-1,809.99-1,063.68

Finding the Fourth Proportional to 1,312.08, 1,809.99 and 1,063.68

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Solution

The fourth proportional to 1,312.08, 1,809.99 and 1,063.68 is: 1,467.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.08 : 1,809.99 = 1,063.68 : x
  2. Step 2: Convert to fraction form
    1,312.08/1,809.99 = 1,063.68/x
  3. Step 3: Cross multiply
    1,312.08x = 1,809.99 × 1,063.68
  4. Step 4: Simplify right side
    1,312.08x = 1,925,250.16
  5. Step 5: Solve for x
    x = 1,925,250.16/1,312.08
  6. Step 6: Final answer
    x = 1,467.33

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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.