Home / 1,533.89-2,115.32-1,030.88

Finding the Fourth Proportional to 1,533.89, 2,115.32 and 1,030.88

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Solution

The fourth proportional to 1,533.89, 2,115.32 and 1,030.88 is: 1,421.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,533.89 : 2,115.32 = 1,030.88 : x
  2. Step 2: Convert to fraction form
    1,533.89/2,115.32 = 1,030.88/x
  3. Step 3: Cross multiply
    1,533.89x = 2,115.32 × 1,030.88
  4. Step 4: Simplify right side
    1,533.89x = 2,180,629.32
  5. Step 5: Solve for x
    x = 2,180,629.32/1,533.89
  6. Step 6: Final answer
    x = 1,421.64

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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.