Home / 1,857.52-2,565.60-1,415.20

Finding the Fourth Proportional to 1,857.52, 2,565.60 and 1,415.20

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Solution

The fourth proportional to 1,857.52, 2,565.60 and 1,415.20 is: 1,954.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.52 : 2,565.60 = 1,415.20 : x
  2. Step 2: Convert to fraction form
    1,857.52/2,565.60 = 1,415.20/x
  3. Step 3: Cross multiply
    1,857.52x = 2,565.60 × 1,415.20
  4. Step 4: Simplify right side
    1,857.52x = 3,630,837.12
  5. Step 5: Solve for x
    x = 3,630,837.12/1,857.52
  6. Step 6: Final answer
    x = 1,954.67

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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.