Home / 1,931.36-2,897.32-777.04

Finding the Fourth Proportional to 1,931.36, 2,897.32 and 777.04

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Solution

The fourth proportional to 1,931.36, 2,897.32 and 777.04 is: 1,165.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.36 : 2,897.32 = 777.04 : x
  2. Step 2: Convert to fraction form
    1,931.36/2,897.32 = 777.04/x
  3. Step 3: Cross multiply
    1,931.36x = 2,897.32 × 777.04
  4. Step 4: Simplify right side
    1,931.36x = 2,251,333.53
  5. Step 5: Solve for x
    x = 2,251,333.53/1,931.36
  6. Step 6: Final answer
    x = 1,165.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.