Home / 1,317.07-1,815.98-1,050.68

Finding the Fourth Proportional to 1,317.07, 1,815.98 and 1,050.68

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Solution

The fourth proportional to 1,317.07, 1,815.98 and 1,050.68 is: 1,448.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317.07 : 1,815.98 = 1,050.68 : x
  2. Step 2: Convert to fraction form
    1,317.07/1,815.98 = 1,050.68/x
  3. Step 3: Cross multiply
    1,317.07x = 1,815.98 × 1,050.68
  4. Step 4: Simplify right side
    1,317.07x = 1,908,013.87
  5. Step 5: Solve for x
    x = 1,908,013.87/1,317.07
  6. Step 6: Final answer
    x = 1,448.68

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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.