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Finding the Fourth Proportional to 1,931.04, 2,895.60 and 631.68

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Solution

The fourth proportional to 1,931.04, 2,895.60 and 631.68 is: 947.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.04 : 2,895.60 = 631.68 : x
  2. Step 2: Convert to fraction form
    1,931.04/2,895.60 = 631.68/x
  3. Step 3: Cross multiply
    1,931.04x = 2,895.60 × 631.68
  4. Step 4: Simplify right side
    1,931.04x = 1,829,092.61
  5. Step 5: Solve for x
    x = 1,829,092.61/1,931.04
  6. Step 6: Final answer
    x = 947.21

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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.