Home / 1,501.12-2,071.20-880.32

Finding the Fourth Proportional to 1,501.12, 2,071.20 and 880.32

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Solution

The fourth proportional to 1,501.12, 2,071.20 and 880.32 is: 1,214.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,501.12 : 2,071.20 = 880.32 : x
  2. Step 2: Convert to fraction form
    1,501.12/2,071.20 = 880.32/x
  3. Step 3: Cross multiply
    1,501.12x = 2,071.20 × 880.32
  4. Step 4: Simplify right side
    1,501.12x = 1,823,318.78
  5. Step 5: Solve for x
    x = 1,823,318.78/1,501.12
  6. Step 6: Final answer
    x = 1,214.64

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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.