Home / 1,580.02-2,178.62-1,330.96

Finding the Fourth Proportional to 1,580.02, 2,178.62 and 1,330.96

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Solution

The fourth proportional to 1,580.02, 2,178.62 and 1,330.96 is: 1,835.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,580.02 : 2,178.62 = 1,330.96 : x
  2. Step 2: Convert to fraction form
    1,580.02/2,178.62 = 1,330.96/x
  3. Step 3: Cross multiply
    1,580.02x = 2,178.62 × 1,330.96
  4. Step 4: Simplify right side
    1,580.02x = 2,899,656.08
  5. Step 5: Solve for x
    x = 2,899,656.08/1,580.02
  6. Step 6: Final answer
    x = 1,835.20

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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.