Home / 1,316.70-1,812.78-1,036.44

Finding the Fourth Proportional to 1,316.70, 1,812.78 and 1,036.44

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Solution

The fourth proportional to 1,316.70, 1,812.78 and 1,036.44 is: 1,426.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.70 : 1,812.78 = 1,036.44 : x
  2. Step 2: Convert to fraction form
    1,316.70/1,812.78 = 1,036.44/x
  3. Step 3: Cross multiply
    1,316.70x = 1,812.78 × 1,036.44
  4. Step 4: Simplify right side
    1,316.70x = 1,878,837.70
  5. Step 5: Solve for x
    x = 1,878,837.70/1,316.70
  6. Step 6: Final answer
    x = 1,426.93

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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.