Home / 1,330.23-1,831.53-1,130.64

Finding the Fourth Proportional to 1,330.23, 1,831.53 and 1,130.64

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Solution

The fourth proportional to 1,330.23, 1,831.53 and 1,130.64 is: 1,556.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.23 : 1,831.53 = 1,130.64 : x
  2. Step 2: Convert to fraction form
    1,330.23/1,831.53 = 1,130.64/x
  3. Step 3: Cross multiply
    1,330.23x = 1,831.53 × 1,130.64
  4. Step 4: Simplify right side
    1,330.23x = 2,070,801.08
  5. Step 5: Solve for x
    x = 2,070,801.08/1,330.23
  6. Step 6: Final answer
    x = 1,556.72

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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.