Home / 1,931.85-2,665.93-1,047.63

Finding the Fourth Proportional to 1,931.85, 2,665.93 and 1,047.63

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Solution

The fourth proportional to 1,931.85, 2,665.93 and 1,047.63 is: 1,445.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.85 : 2,665.93 = 1,047.63 : x
  2. Step 2: Convert to fraction form
    1,931.85/2,665.93 = 1,047.63/x
  3. Step 3: Cross multiply
    1,931.85x = 2,665.93 × 1,047.63
  4. Step 4: Simplify right side
    1,931.85x = 2,792,908.25
  5. Step 5: Solve for x
    x = 2,792,908.25/1,931.85
  6. Step 6: Final answer
    x = 1,445.72

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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.