Home / 1,515.08-2,259.61-1,389.32

Finding the Fourth Proportional to 1,515.08, 2,259.61 and 1,389.32

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Solution

The fourth proportional to 1,515.08, 2,259.61 and 1,389.32 is: 2,072.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.08 : 2,259.61 = 1,389.32 : x
  2. Step 2: Convert to fraction form
    1,515.08/2,259.61 = 1,389.32/x
  3. Step 3: Cross multiply
    1,515.08x = 2,259.61 × 1,389.32
  4. Step 4: Simplify right side
    1,515.08x = 3,139,321.37
  5. Step 5: Solve for x
    x = 3,139,321.37/1,515.08
  6. Step 6: Final answer
    x = 2,072.05

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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.